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Sun
Study
Paints Our Sun as a Planet Thief
A close encounter between our sun and a passing star some four billion years
ago may have played a role in shaping our solar system. New computer simulations
describe how a rendezvous between two young solar systems could have occurred.
And one potential scenario shows our sun kidnapping a planet or smaller
object from the other star's solar system.
Sunspots
more active than for 8000 years
The Sun has been more energetic in the last 70 years than it has for the
previous 8000 - but it is not to blame for recent global warming.
Tree
Rings Reveal Sunspot Record.
Until now, scientists could only study sunspot records back to 1610, when
astronomers started keeping track of sunspots by direct observation. Now,
thanks to a clever new method, the 400-year sunspot record can be extended
back to the Ice Age.
Sun
Sample Probe Crashes in Desert. Sept. 8, 2004
A capsule containing particles from the sun crashed into the Utah desert
on Wednesday after its parachute failed to deploy.
NASA Mission
Returns With A Piece Of The Sun. Pasadena CA (JPL) Aug 20, 2004
In a dramatic ending that marks a beginning in scientific research, NASA's
Genesis spacecraft is set to swing by Earth and jettison a sample return
capsule filled with particles of the Sun that may ultimately tell us more
about the genesis of our solar system.
Scientists
Explain Mysterious Plasma Jets On The Sun. Palo Alto CA (SPX) Jul 29,
2004
Solar physicists from Lockheed Martin and the Solar Physics and upper-Atmosphere
Research Group at the Department of Applied Mathematics of the University
of Sheffield, UK have used computer modeling and some of the highest resolution
images ever taken of the solar atmosphere to explain the cause of supersonic
jets that continuously shoot through the low atmosphere of the Sun.
Spacecraft
Fleet Tracks Blast Wave Through Solar System Huntsville AL (SPX) Jul
09, 2004
A fleet of spacecraft dispersed throughout the solar system gave the most
comprehensive picture to date of how blast waves from solar storms propagate
through the solar system and the radiation generated in their wake.
Suns Of All
Ages Possess Comets, Maybe Planets. Atlanta - Jan 07, 2004
In early 2003, Comet Kudo-Fujikawa (C/2002 X5) zipped past the Sun at a
distance half that of Mercury's orbit. Astronomers Matthew Povich and John
Raymond (Harvard-Smithsonian Center for Astrophysics) and colleagues studied
Kudo-Fujikawa during its close passage. Today at the 203rd meeting of the
American Astronomical Society in Atlanta, they announced that they observed
the comet puffing out huge amounts of carbon, one of the key elements for
life. The comet also emitted large amounts of water vapor as the Sun's heat
baked its outer surface.
Mercury
Fiery blastoff sets US probe toward first rock from the Sun. Washington (AFP) Aug 03, 2004 - US spacecraft Messenger lifted off from Cape Canaveral, Florida, early Tuesday on a six-year exploratory journey toward Mercury, the closet planet to the Sun. With Messenger safely nestled in its payload bay, a massive Delta II rocket roared off from its launching pad at about 2:16 am (0616 GMT), turning in a matter of seconds from a fire-breathing giant into a tiny speck of light in the sky.
SwRI Goes Suborbital
In Search Of Mercury And The "Vulcanoids" Boulder - Jan 27,
2004
A new major scientific payload flew in space last week after launching aboard
a NASA suborbital Black Brant rocket. The payload, consisting of a telescope/spectrometer
combination and an image-intensified imaging system, successfully explored
the ultraviolet spectrum of the planet Mercury and also searched for the
long-sought belt of small bodies called Vulcanoids that may lie even closer
to the Sun than Mercury. Southwest Research Institute (SwRI) provided the
payload and is responsible for data analysis.
Venus
A Temperate Venus
Revealed. Moffett Field CA (SPX) Aug 19, 2004
In part 1 of this interview with Astrobiology Magazine editor Henry Bortman,
planetary scientist David Grinspoon explained how Venus evolved from a wet
planet similar to Earth to the scorching hot, dried-out furnace of today.
In part 2, Grinspoon discusses the possibility of life on Venus.
Venus Transit Of
Sun Live From The Backyard Or Online. Washington (SPX) May 17, 2004
"There will be no other till the twenty-first century of our era has
dawned upon the Earth and the June flowers are blooming in 2004. What will
be the state of science ? God only knows." - William Harkness, U.S.
Naval Observatory 1882.
Molecular
rings could shelter Venus bugs
The idea that microbes live in the planet's clouds is controversial, but
scientists can now explain how they might avoid the Sun's damaging UV light.
"Heavy Metal"
Snow On Blazing Venus Is Lead Sulfide. St. Louis - Feb 11, 2004
Lead sulfide also known by its mineral name, galena is a naturally
occurring mineral found in Missouri, other parts of the world, and now.
. .other parts of the solar system. That's because recent thermodynamic
calculations by researchers at Washington University in St. Louis provide
plausible evidence that "heavy metal snow," which blankets the
surface of upper altitude Venusian rocks, is composed of both lead and bismuth
sulfides.
Earth's Moon
Russia May Have
Moon Base By 2025. Moscow (UPI) Nov 22, 2004
Russia may have a base on the moon by 2025, according to a Russian space
official, the Interfax news agency reported Monday.
Footprints On
The Moon Moffett Field CA (SPX) Aug 30, 2004
The Moon preserves unique information about changes in the habitability
of the Earth-Moon system. This record has been obscured on the Earth by
billions of years of rain, wind, erosion, volcanic eruptions, mountain building,
and plate tectonics.
Moon Written In
Stone Moffett Field CA (SPX) Aug 02, 2004
Scientists have pinpointed the source of a meteorite from the moon for the
first time. Their unique meteorite records four separate lunar impacts.
See also Odyssey
of a Moon rock and Lunar
Meteorite's Life Story Revealed.
Apollo 11 Experiment
Still Going Strong After 35 Years.
Scientists from various institutions who analyze the data from the lunar
laser ranging experiment have observed, among other things, that the Moon
is moving away from the Earth (3.8 cm. a year) and has a fluid core, and
that Einstein's Theory of Relativity is accurate. See also What
Neil & Buzz Left On The Moon.
Cassini Exposes
Saturn's Two-Face Moon Pasadena CA (JPL) Jul 16, 2004
The moon with the split personality, Iapetus, presents a perplexing appearance
in the latest images snapped by the Cassini spacecraft.
A New
Moon for Earth? March 26, 2004
Earth has acquired a "quasi-moon" an asteroid that will
encircle our planet for the next couple of years while it orbits the sun
on a horseshoe-shaped path, according to a report to be published on Saturday
in New Scientist. The asteroid, 2003 YN17, "is probably a chunk of
debris" from an impact between a larger space rock and the surface
of the moon, the British weekly said.
Lunar Mountain
With Permanent Sun Good Site For Base. Houston (UPI) March 19, 2004
Scientists have discovered a mountain on the moon where the sun never sets,
which might become the site of a U.S. moonbase.
Living Off
The "Land" Critical To Long Term Moon, Mars Habitation. Huntsville
AL - Mar 24, 2004
Sludge. That's what most people think of when they envision the gray, powdery
soil called regolith covering the airless surface of the Moon.
Not Dr. Mike Duke. He sees gold.
Moon And Planets
Gather Round. Huntsville - Mar 22, 2004
Every few years or so, something wonderful happens: all five naked-eye planets
appear in the evening sky at the same time. You can walk outside after dinner,
and without any kind of telescope, see Mercury, Venus, Mars, Saturn, and
Jupiter.
No Moon,
no life on Earth, suggests theory
Four billion years ago, when life began, the Moon caused massive ocean tides
to ebb and flow, and without these life may never have got started.
German
Real Estate Investors Tell Bush To Keep Off Our Moon Rock Berlin (AFP)
Mar 11, 2004
More than 60 worried owners of lunar real estate have written to the White
House warning Bush not to let astronauts soil their property. The "land
parcels" were bought from Dennis Hope, a US entrepreneur who claims
he secured legal ownership of the moon and most other bodies in the solar
system 20 years ago by exploiting a loophole in the 1967 UN Outer Space
Treaty.
Lunar Convoys As
An Option For A Return To The Moon. Madison - Feb 24, 2004
The scientific community now believes there is water on the Moon. To some,
this suggests a grand opportunity, and so it can be. However, the Moon's
water, if there, is thought to be located near the poles, in deep, permanently-shadowed
craters, as ice that is possibly buried, or at least mixed with lunar regolith
writes William H. Knuth.
NASA
Gets New Funds For Space Shuttles And Moon Mission. Washington (AFP)
Feb 03, 2004
The new US public budget unveiled Monday gives a big boost to spending on
efforts to get the US shuttle back in space and to start moves to get manned
missions to the moon and Mars. Funding for NASA in fiscal 2005 will rise
by 5.6 percent to $16.2 billion. The $866 million increase for the year
starting October 1 comes after a decade of stagnation for the space program.
Most other government departments saw funding fall.
Bush Could Announce
New Manned Space Missions To Moon And Mars. Washington (AFP) Jan 09,
2004
President George W. Bush is ready to announce new goals for the US space
program next week, that could include manned missions to the Moon and beyond,
US government officials said late Thursday.
Mars
The Martian
Methane Surprise Moffett Field CA (SPX) Dec 07, 2004
At the recent Division of Planetary Sciences conference in Louisville, Kentucky,
Michael Mumma, Director of the Center for Astrobiology at NASA's Goddard
Space Flight Center, announced that relatively high levels of methane had
been detected on Mars.
Proof
Positive: Mars Once Had Water, Researchers Conclude
There is undeniable proof that water once existed on the planet Mars, a
team of researchers has concluded in a series of 11 articles this week in
a special issue of the journal Science.
Journey
Toward 'Burns Cliff Continues. Pasadena CA (JPL) Nov 10, 2004
Opportunity's trek towards "Burns Cliff" continues. The journey
has been much more difficult than anticipated. The rover has experienced
drive slippage of up to 100 percent. The plan is to attempt a couple of
sols of up-slope, switchback driving and then review options to get to Burns
Cliff.
Over
The Martian Wall Pasadena CA (JPL) Nov 08, 2004
All the scientific tools on NASA's two Mars Exploration Rovers are still
working well, a full 10 months after Spirit's dramatic landing. The ones
on Spirit are adding fresh evidence about the history of layered bedrock
in a hill the rover is climbing.
Mars
Express pictures action of glaciers.
The Mars Express spacecraft has returned stunning images of mountains and
valleys that show signs of past volcanic activity, and suggest that glaciers
once shaped the red planet's surface.
Opportunity
Ready To Make "Climb" To Burns Cliff Pasadena CA (JPL) Oct
22, 2004
NASA's Opportunity rover continues to operate without any major issues after
spending 130 sols inside "Endurance Crater". To date, the rover
has ground 21 targets with the rock abrasion tool, performing 62 integrations
with the Moessbauer spectrometer and 33 with the alpha particle X-ray spectrometer,
and taking 115 observations with the miniature thermal emission spectrometer.
New Propulsion
Concept Could Make 90-Day Mars Round Trip Possible Seattle WA (SPX)
Oct 15, 2004
A new means of propelling spacecraft being developed at the University of
Washington could dramatically cut the time needed for astronauts to travel
to and from Mars, and could make humans a permanent fixture in space.
A
PICTURE OF YOUNG MARS.
Reconstruction of the red planet's past reveals acid rain and briny seas.
Sopping
Salts Could Reveal History Of Water On Mars Bloomington IN (SPX) Oct
07, 2004
Epsom-like salts believed to be common on Mars may be a major source of
water there, say geologists at Indiana University Bloomington and Los Alamos
National Laboratory. In their report in this week's Nature, the scientists
also speculate that the salts will provide a chemical record of water on
the Red Planet.
Odyssey's
New Odometer Moffet Field CA (SPX) Aug 30, 2004
NASA's Mars Odyssey orbiter begins working overtime today after completing
a prime mission that discovered vast supplies of frozen water, ran a safety
check for future astronauts, and mapped surface textures and minerals all
over Mars, among other feats.
Life On Mars:
A Definite Possibility Moffett Field CA (SPX) Aug 31, 2004
Was Mars once a living world? Does life continue, even today, in a holding
pattern, waiting until the next global warming event comes along? Many people
would like to believe so. Scientists are no exception. But so far no evidence
has been found that convinces even a sizable minority of the scientific
community that the red planet was ever home to life.
Bedrock
In Mars' Gusev Crater Hints At Watery Past. Tucson AZ (SPX) Aug 19,
2004
Now that NASA's Mars Exploration Rover Spirit is finally examining bedrock
in the "Columbia Hills," it is finding evidence that water thoroughly
altered some rocks in Mars' Gusev Crater.
Spirit's
Sojourn Leaves Ancient Lake Hypothesis High and Dry
The Mars Exploration Rover Spirit covered 637 meters in its first 90 Martian
days, or sols (a sol is 40 minutes longer than an Earth day). Its trek through
the Gusev crater has not revealed any evidence for the ancient lakebed that
geologists thought might be there, but water may have played some part in
the formation of certain observed rock features.
MARS
ROVER SNAPS PANORAMIC VIEW
Spirit continues its heroic climb up the Columbia Hills.
THE
SEARCH FOR LIFE ON MARS
Briefing: As Mars Express sends back the best ever data about the chemicals
present in the martian atmosphere, rumours abound that scientists are beginning
to detect signs of life on the red planet. news@nature.com
weighs up the evidence so far.
Virtual
Mars. Moffett Field CA (SPX) Aug 03, 2004
NASA scientists have modified a scientific Web site so the general public
can inspect big regions and smaller details of Mars' surface, a planet whose
alien terrain is about the same area as Earth's continents.
Mars
Rover Spirit Finds Bedrock. July 16, 2004
Six months after arriving at Mars for detailed geologic studies, the Spirit
rover finally has reached what scientists came for: bedrock.
New Martian
Meteorite Found In Antarctica. Moffett Field CA (SPX) Jul 21, 2004
While rovers and orbiting spacecraft scour Mars searching for clues to its
past, researchers have uncovered another piece of the red planet in the
most inhospitable place on Earth - Antarctica.
Allan
Hills Meteorite Abiogenic? Moffett Field CA (SPX) Jul 22, 2004
The scientific debate over whether a meteorite contains evidence of past
life on Mars continues to intensify, with colleagues of the team that announced
the possibility in 1996 revealing new findings that may cast doubt on some
of that earlier work.
Freeze-Dried
Water, Magnetic Dust Moffet Field CA (SPX) Jul 12, 2004
Mars is a dusty place and some of that dust is highly magnetic. Magnetic
minerals carried in dust grains may be freeze-dried remnants of the planet´s
watery past.
Mars Rain Carved Valleys. July 2, 2004 Mars was not only awash with water, it also once had rainfall, according to a French study published on Friday. The evidence comes from infrared imaging, which probed under dust deposited over the millions of years and found dense networks of dry valleys, whose branching bear the hallmarks of having been carved out by rain.
Northern
Rim Of Hellas Basin. Paris (ESA) Jul 09, 2004
These images of the rim of the Hellas basin on Mars were obtained by the
High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft.
On
Earth, as it is on Mars?
The small spheres of haematite, nicknamed blueberries, that litter the Mars
landing site of NASAs rover Opportunity might have an analogue on Earth,
formed from groundwater in southern Utah.
Spirit
Finds Its Pot Of Gold. Moffet Field CA (SPX) Jun 17, 2004
Some of the first things the scientists noticed about the Columbia geology
were small round nodules that looked very similar to the hematite "blueberries"
previously found on Mars. Many of the blueberries on Columbia Hills are
more football-shaped than spherical, however, so these nodules might not
be hematite concretions.
The Geology
Of Mars Mid-'04. Sacramento (SPX) Jun 08, 2004
But while the ability of Spirit to locate water-deposited and -modified
material on Mars' surface is still in doubt, its twin Opportunity has rather
stolen its thunder by finding solid proof of such material almost as soon
as it landed on the strange, flat, hematite-covered Meridiani Plain.
Chasing Martian
Dust Devils. Moffet Field (SPX) Jun 07, 2004
Mars has only a faint atmosphere [less than one percent of terrestrial pressures],
yet offers up its history of dust devils as swirling tracks in a remarkable
landscape of wind-swept and carved terrain. These tiny twisters tend
to appear in the middle afternoon on Mars, when solar heating is maximum
and when warm air rises and collides with other pressure fronts to cause
circulation.
Key To Predicting
Martian Volcanos May Be Locked In Tiny Bubbles. Blacksburg VA (SPX)
Jun 09, 2004
By summer 2005, researchers in the Fluids Research Laboratory at Virginia
Tech will be able to look for evidence of water on Mars by examining submicroscopic
bubbles in martian meteorites, determine whether fluids and silicate melts
trapped in volcanic rock can help predict future eruptions, and locate buried
mineral deposits using data from surface rocks.
Evidence
Of "Flooding" At Mangala Valles Imaged By Mars Express. Paris
(ESA) Jun 10, 2004
This images of fluvial surface features at Mangala Valles on Mars were obtained
by the High Resolution Stereo Camera (HRSC) on board the ESA Mars Express
spacecraft.
Dust rocks martian
river theory
Signs of water may really be slumping sand. Gullies on Mars that appear
to have been carved by flowing water could instead have been created by
landslides of dry powdery material, scientists have found.
Mars Rover
Inspects Stone Ejected From Crater. Pasadena (JPL) May 18, 2004
NASA's Mars Exploration Rover Opportunity has begun sampling rocks blasted
out from a stadium-sized impact crater the rover is circling, and the very
first one may extend our understanding about the region's wet past.
New Mars
rock hints at short-lived lakes
The dark rock may be a basaltic sandstone - if confirmed, it would mean
that any watery periods in Mars' past were cold and brief.
How Mars got its
rust
The intense heat inside the early Earth was enough to convert a lot of iron
oxide into molten metallic iron, which seeped down into the planet to form
a huge liquid core. Mars never achieved the temperatures needed for this
process simply because it is smaller, they say. This left more iron oxide
in the upper layers of the planet, which led to its distinctive russet hue
and relatively puny iron core.
Mars
Deep Faults And Disrupted Crater At Acheron Fossae. Paris (ESA) May
11, 2004
These images were taken by the High Resolution Stereo Camera (HRSC) on board
ESA's Mars Express of the Acheron Fossae region, an area of intensive tectonic
(continental 'plate') activity in the past.
Study May Cast
Doubt On Some 1996 Evidence Of Past Life On Mars. Houston TX (SPX) May
06, 2004
The scientific debate over whether a meteorite contains evidence of past
life on Mars continues to intensify, with colleagues of the team that announced
the possibility in 1996 revealing new findings that may cast doubt on some
of that earlier work.
Mars
Rover Arrival At Deeper Crater Provides A Tempting Eyeful
Scientists and engineers celebrated when they saw the first pictures NASA's
Opportunity sent from the rim of a stadium- sized crater that the rover
reached after a six-week trek across martian flatlands. Multiple layers
of exposed bedrock line much of the inner slope of the impact crater informally
called "Endurance."
Martian
Water Science Early 2004 Mountain View CA - Apr 27, 2004
In part two of our report on NASA's Third Astrobiology Science Conference,
we detour to a press conference held separately the last day of the conference
that revealed the Gusev landing site of the first MER rover, "Spirit"
was at last starting to show evidence of an aqueous past after all. Relating
this announcement to specific papers presented at the conference, Bruce
Moomaw explains how the story of Mars is getting more complicated with each
new mission to Mars.
Analysis:
'Bounce' rock's cosmic portent.
The main ingredient in Bounce is a volcanic mineral called pyroxene.
'Weird'
meteorite may be from Mars moon
The Kaidun meteorite is like no other, including minerals never seen before,
but the Red Planet's moon Phobos could provide an explanation.
Methane on
Mars. Moffett Field - Mar 31, 2004
Considered suggestive of life, an atmosphere of methane on another planet
is considered one of the four best candidates for detecting habitable conditions
using remote sensing and telescope spectrographs.
Spirit Finds
Multi-Layer Hints Of Past Water At Mars' Gusev Site. Pasadena - Apr
02, 2004
Clues from a wind-scalloped volcanic rock on Mars investigated by NASA's
Spirit rover suggest repeated possible exposures to water inside Gusev Crater,
scientists said Thursday.
Opportunity
Finds Evidence Of Ocean Shoreline. Pasadena - Mar 23, 2004
NASA today released details on news findings on Mars that point to the first
strong evidence that a sea once covered part of Mars in the Meridiani Planum
area where Mars Exploration Rover Opportunity is currently exploring. See
also March 23 news conference, Major Mars Finding Via Real Player at http://www.space.tv/ram/mars-pb-mar23.ram
- (60 mins)
Martian
Spiral Mystery At Poles Explained. Tucson AZ - Mar 26, 2004
The spiral troughs of Mars' polar ice caps have been called the most enigmatic
landforms in the solar system. The deep canyons spiraling out from the Red
Planet's North and South poles cover hundreds of miles. No other planet
has such structures.
Blueberries'
secret solves Mars mystery.
The Mars rover Opportunity has now solved the key puzzle it was sent to
the Meridiani Planum to figure out: where is the hematite that was spotted
in the area by the Mars Global Surveyor orbiter? The answer is in the "blueberries",
the tiny mineral spheres that litter the rover's landing site. The question
was a key one, because hematite almost always forms in water, and water
is thought to be a pre-requisite for life.
Martian
Moons Block Sun In Unique Eclipse Images From Another Planet. Pasadena
- Mar 17, 2004
This image shows the transit of Mars' moon Phobos across the Sun. The images
were taken by the Mars Exploration Rover Opportunity on the morning of the
45th martian day, or sol, of its mission. This observation will help refine
our knowledge of the orbit and position of Phobos.
"Vast"
Reserves Of Frozen Water On Mars Pole: Study. Paris (AFP) Mar 17, 2004
Mars holds huge reserves of frozen water in its southern pole, according
to the first detailed assessment of the data sent back by Europe's Mars
Express spacecraft earlier this year.
Volcanic
Rock In Mars' Gusev Crater Hints At Past Water. Pasadena - Mar 05, 2004
NASA's Spirit has found hints of a water history in a rock at Mars' Gusev
Crater, but it is a very different type of rock than those in which NASA's
Opportunity found clues to a wet past on the opposite side of the planet.
A NASA
snow job, or just a lot of flakes?
Mars images reveal oddities - on Earth. Forget about ancient traces
of water on Mars. There's a little white bunny up there. And stone tools.
And dinosaur fossils. Plants, art, even letters of the alphabet.
Opportunity
Rover Finds Strong Evidence Meridiani Planum Was Wet. Washington - Mar
02, 2004
Scientists have concluded the part of Mars that NASA's Opportunity rover
is exploring was soaking wet in the past. Evidence the rover found in a
rock outcrop led scientists to the conclusion. Clues from the rocks' composition,
such as the presence of sulfates, and the rocks' physical appearance, such
as niches where crystals grew, helped make the case for a watery history.
For NASA press conference see http://www.space.tv/.
Spirit
Rover On Its Way To Mars Crater. Washington (AFP) Feb 26, 2004
The Mars rover Spirit will go on a two-week trip through rocky terrain to
reach the border of a crater named Bonneville, NASA announced Thursday.
The crater is 150 meters (492 feet) long and about 15 meters (49 feet) deep
and offers a window into Mars' geology, said Ray Arvidson, assistant chief
of scientists at the National Aeronautics and Space Administration's Jet
Propulsion Laboratory in Pasadena, California.
Martian 'pebbles'
don't prove watery past
NASA probe could be walking on broken glass. 10 February 2004
Opportunity
Examines Trench As Spirit Prepares To Dig One. Pasadena - Feb 20, 2004
By inspecting the sides and floor of a hole it dug on Mars, NASA's Opportunity
rover is finding some things it did not see beforehand, including round
pebbles that are shiny and soil so fine-grained that the rover's microscope
can't make out individual particles.
Healthy Spirit
Cleans A Mars Rock; Opportunity Rolls. Pasadena (JPL) Feb 06, 2004
NASA's Spirit has returned to full health and resumed doing things never
attempted on Mars before. "Our patient is healed, and we're very excited
about that," said Jennifer Trosper of NASA's Jet Propulsion Laboratory,
Pasadena, Calif., mission manager for Spirit.
Mars
Rover Opportunity Sees Tiny Spheres In Martian Soil.
NASA's Opportunity has examined its first patch of soil in the small crater
where the rover landed on Mars and found strikingly spherical pebbles among
the mix of particles there.
NASA
scientists awed by new Mars images. Pasadena (AFP) Jan 26, 2004
NASA scientists said they hit a "scientific jackpot" Sunday as
Opportunity, the second of two roving US Mars probes, transmitted astonishing
images from the planet's surface. The 820-million-dollar mission's scientific
director, Steve Squyres, was left gasping for words as Opportunity sent
back to Earth pictures of what he described as an "alien landscape."
Layered
rocks tantalize Mars scientists
New images suggest rocks dead ahead of the rover Opportunity are sedimentary
- that could prove the planet once had lakes or oceans.
Opportunity
Bounces Down On Mars. Pasadena - Jan 25, 2004
Opportunity, the second of two US robotics rovers sent to explore the surface
of Mars, was working normally early Sunday after a successful landing Saturday
night at 9:05pm PST (0505 GMT) in an area known as Meridiani Planum.
Spirit Beeps
It's Alive And "Commandable": NASA Official. Pasadena - Jan
22, 2004
NASA officials at the Jet Propulsion Laboratory have confirmed that the
Mars Exploration Rover Spirit has responded to an emergency command this
morning by sending back a radio beep -- an event which had been stated as
a possibility, but not a certainty, at the end of this morning's JPL press
conference. "This means it's commandable," a JPL spokeswoman told
SpaceDaily. The command was tailored to the assumption that the rover's
onboard computer is currently in a "fault mode", and the beep
confirms that it has detected a serious fault, either in the hardware or
the software. The fact that the rover responded at all, however, is encouraging.
(this file will be updated until the rover is fully recovered).
Is Gusev Crater
The Site Of An Ancient Martian Lake? Pasadena - Jan 09, 2004
Scientists analyzing data from NASA's Spirit rover to determine water levels
at the landing site may not have a final answer for several more weeks,
but today they announced that they had uncovered one tantalizing clue. "We
came [to Gusev] looking for carbonates," said Phil Christensen, payload
instrument lead for Spirit's mini-thermal emission spectrometer (Mini-TES).
"And we have found carbonates." They are present, however, in
only trace amounts - 1 to 2 percent of the surface soil.
APS X-rays
Reveal Secrets Of The Martian Core. Argonne - Jan 12, 2004
While astronomers peer at the surface of Mars, now making its closest approach
to Earth in 60,000 years, scientists are learning the secrets of its deep
interior using the Advanced Photon Source at Argonne.
Mars Rover Spirit. See the latest photos at www.nasa.gov
Bush Could Announce
New Manned Space Missions To Moon And Mars. Washington (AFP) Jan 09,
2004
President George W. Bush is ready to announce new goals for the US space
program next week, that could include manned missions to the Moon and beyond,
US government officials said late Thursday.
NASA
rover lands safely on red planet.
See Spirit's
first images | Panorama
An
Odyssey of Mars Science: Part 2. Sacramento - Dec 30, 2003
The discovery by Mars Odyssey which has most captured the public's imagination
by far is the finding by its "GRS" experiment -- which includes
both gamma-ray and neutron spectrometers -- that Mars does indeed have a
massive reservoir of water ice near its surface in the polar regions writes
Bruce Moomaw.
Jupiter
Underneath
Ganymede's Ice? Moffett Field CA (SPX) Aug 19, 2004
Scientists have discovered irregular lumps beneath the icy surface of Jupiter's
largest moon, Ganymede. These irregular masses may be rock formations, supported
by Ganymede's icy shell for billions of years.
Scientists
Discover Ganymede Has A Lumpy Interior. Pasadena CA (JPL) Aug 16, 2004
Scientists have discovered irregular lumps beneath the icy surface of Jupiter's
largest moon, Ganymede. These irregular masses may be rock formations, supported
by Ganymede's icy shell for billions of years.
Researchers
Show Io Vaporizing Rock Gases Into Atmosphere. St. Louis MO (SPX) Jun
16, 2004
The hottest spot in the solar system is neither Mercury, Venus, nor St.
Louis in the summer. Io, one of the four satellites that the Italian astronomer
Galileo discovered orbiting Jupiter almost 400 years ago, takes that prize.
Expert
Predicts Global Climate Change On Jupiter As It's Spots Disappear. San
Francisco - Apr 26, 2004
If a University of California, Berkeley, physicist's vision of Jupiter is
correct, the giant planet will be in for a major global temperature shift
over the next decade as most of its large vortices disappear.
Researcher Predicts Global Climate Change On Jupiter As Planet's Spots Disappear.
Io's Lava
Lakes Like Early Earth? Buffalo - Mar 22, 2004
Investigations into lava lakes on the surface of Io, the intensely volcanic
moon that orbits Jupiter, may provide clues to what Earth looked like in
its earliest phases, according to researchers at the University at Buffalo
and NASA's Jet Propulsion Laboratory.
Probing
Europa Ice Will Take A New Class Of Plantary Exploration Tools Bremerhaven
(UPI) March 15, 2004
Researchers in Germany are testing a probe that could melt through Europa's
ice sheet to analyze the water below for microbial life.
Life
could be tough on acid Europa
Far from being a haven of ice and water and an ideal spot for the search
for alien life, Jupiter's moon may be a corrosive hotbed of acid and peroxide.
Old
Equation May Shed New Light On Planet Formation.
New work with an old equation may help scientists calculate the thickness
of ice covering the oceans on Jupiter's moon Europa and ultimately provide
insight into planet formation. Planetary bodies, such as the Earth and its
moon, exert such gravitational force on one another that tides occur, not
just in the oceans, but also in bodies of the planets themselves. The surfaces
of planets actually rise and fall slightly as they orbit one another.
Saturn
Hovering
Over Titan Pasadena CA (JPL) Nov 24, 2004
A mosaic of nine processed images recently acquired during Cassini's first
very close flyby of Saturn's moon Titan on Oct. 26, 2004, constitutes the
most detailed full-disc view of the mysterious moon.
Cassini Spots
Possible Ice Volcano On Titan. Pasadena CA (JPL) Nov 10, 2004
A strikingly bright feature that is consistent with an active geology has
been seen in one of Cassini's first radar images of Saturn's moon Titan.
There are many possibilities for what it is but one of the leading candidates
is that it may be a 'cryovolcanic' flow or 'ice volcano'.
Titan
has no breaking waves
The Cassini space probe discovers that the surface of Saturn's moon
is not awash with liquid after all - ice or volcanism may prevail.
Cassini Observations
Show Dynamic Dance At Saturn Boulder CO (SPX) Nov 09, 2004
A University of Colorado at Boulder professor involved with the Cassini-Huygens
mission is reporting an ever-changing vista at the frontiers of Saturn,
featuring wayward moons, colliding meteoroids, rippling rings and flickering
auroras.
Radar
Image Shows Titan's Surface Live And In "Color" Pasadena CA
(JPL) Nov 08, 2004
Saturn's moon Titan shows a sharp contrast between its smooth and rough
edges in this new false-color radar image. Titan's surface lies beneath
a thick coat of hazy clouds, but Cassini's radar instrument can peer through
to show finer surface features. Scientists have added color to emphasize
finer details on Titan, as shown in the image.
Moon
Shifts Shape of Saturn Rings By Irene Mona Klotz, Discovery News.Oct.
13, 2004
An image released this week shows a 2,980-mile-wide gap in Saturn's rings
caused by the gravitational tug of its small moon, Mimas. Mimas is puny
compared to its sister moons in orbit around Saturn. But the satellite has
shown the Cassini science team an impressive demonstration of its power.
Saturn's Moon
And Its Flock. Pasadena CA (JPL) Oct 01, 2004
In its own way, the shepherd moon Prometheus (102 kilometers, 63 miles across)
is one of the lords of Saturn's rings. The little moon maintains the inner
edge of Saturn's thin, knotted F ring, while its slightly smaller cohort,
Pandora, (84 kilometers, or 52 miles across) guards the ring's outer edge.
Cassini Discovers
Ring And One, Possibly Two, Objects At Saturn. Pasadena CA (JPL) Sep
10, 2004
Scientists examining Saturn's contorted F ring, which has baffled them since
its discovery, have found one small body, possibly two, orbiting in the
F ring region, and a ring of material associated with Saturn's moon Atlas.
South Polar
Storms Pasadena CA (JPL) Aug 30, 2004
This Cassini spacecraft narrow angle camera view of Saturn's southern polar
region features a bright white spot, or storm, surrounded by faint, darker
swirls of clouds.
Out From the
Shadows: Two New Saturnian Moons. Pasadena CA (JPL) Aug 17, 2004
With eyes sharper than any that have peered at Saturn before, the Cassini
spacecraft has uncovered two moons, which may be the smallest bodies so
far seen around the ringed planet.
Saturn's
Moon Titan: Prebiotic Laboratory. Moffett Field CA (SPX) Aug 12, 2004
Jonathan Lunine, professor of planetary science and physics at the University
of Arizona's Lunar and Planetary Laboratory in Tucson, Arizona, has a longtime
fascination with Saturn's largest moon, Titan. Astrobiology Magazine's Managing
Editor Henry Bortman spoke recently with Lunine about the Huygens mission
slated to descend into Titan's thick atmosphere in early 2005.
Titan's Purple
Haze Points To A Fuzzy Past. Pasadena CA (JPL) Jul 30, 2004
Encircled in purple stratospheric haze, Saturn's largest moon, Titan, appears
as a softly glowing sphere in this colorized image taken on July 3, 2004,
one day after Cassini's first flyby of that moon.
Cassini
lifts Titan's hazy veil
Moon gives hints of hydrocarbons in hot spots.
Saturn's Rings
In Ultraviolet. Moffet Field CA (SPX) Jul 09, 2004
The best view ever of Saturn's rings in the ultraviolet indicates there
is more ice toward the outer part of the rings, hinting at ring origin and
evolution, say two University of Colorado at Boulder researchers involved
in the Cassini mission.
Titan's Strange
Surface Pasadena - Jul 05, 2004
Cassini spacecraft instruments have peered through the orange smog of Titan
and glimpsed the surface below. Images sent back to Earth reveal dark areas
and lighter, fuzzy areas. Data from the Visual Infrared Mapping Spectrometer
(VIMS) indicate that the dark areas are pure water ice. The bright fuzzy
regions have several different types of non-ice materials, and may include
organic materials such as hydrocarbons.
Cassini Shows
Off Its Stuff With Phoebe Extravaganza. Pasadena (JPL) Jun 15, 2004
Images collected during Cassini's close flyby of Saturn's moon, Phoebe,
have yielded strong evidence that the tiny object may contain ice-rich material,
overlain with a thin layer of darker material perhaps 300 to 500 meters
(980 to 1,600 feet) thick.
Cassini
flies past Saturn moon
The Cassini spacecraft, which is en route to Saturn, has made a close pass
of the planet's mysterious moon Phoebe.
Seven Years To
Saturn. Pasadena - May 24, 2004
As Cassini nears its rendezvous with Saturn, new detail in the banded clouds
of the planet's atmosphere are becoming visible.
Titan's
Big Future In Plastics. Tucson AZ - May 25, 2004
While the Cassini spacecraft has been flying toward Saturn, chemists on
Earth have been making plastic pollution like that raining through the atmosphere
of Saturn's moon, Titan.
Cassini's First
Glimpses Of Titan. Boulder (SPX) May 07, 2004
The veils of Saturn's most mysterious moon have begun to lift in Cassini's
eagerly awaited, first glimpse of the surface of Titan, a world where scientists
believe organic matter rains from hazy skies and seas of liquid hydrocarbons
dot a frigid surface.
Two
Storms Caught In The Act On Saturn
Three months before arrival at Saturn , the Cassini spacecraft caught two
storms in the act of merging into one larger storm. This is only the second
time this phenomenon has been observed on the ringed planet.
Titan Casts
Revealing Shadow. Cambridge MA - Apr 06, 2004
A rare celestial event was captured by NASA's Chandra X-ray Observatory
as Titan -- Saturn's largest moon and the only moon in the Solar System
with a thick atmosphere -- crossed in front of the X-ray bright Crab Nebula.
The X-ray shadow cast by Titan allowed astronomers to make the first X-ray
measurement of the extent of its atmosphere.
Titanic waves break on Saturn's sludgy moon.
X-Rays From
Saturn Pose Puzzles Huntsville - Mar 09, 2004
The first clear detection of X-rays from the giant, gaseous planet Saturn
has been made with NASA's Chandra X-ray Observatory. Chandra's image shows
that the X-rays are concentrated near Saturn's equator, a surprising result
since Jupiter's X-ray emission is mainly concentrated near the poles. Existing
theories cannot easily explain the intensity or distribution of Saturn's
X-rays.
Saturn Ring Spokes
Appear To Be Gone Since Voyager Flyby. Moffett Field - Mar 01, 2004
Cassini's approach to Saturn has begun. The Cassini image team has noted
that new details in the atmosphere and rings are becoming visible, and scientists
are already puzzling over the noticeable absence of the ghostly spoke-like
dark markings in the rings first discovered during Voyager's approach to
the planet 23 years ago.
Titan Is
Ideal Lab For Oceanography, Meteorology. Tucson - Feb 16, 2004
After a 7-year interplanetary voyage, NASA's Cassini spacecraft will reach
Saturn this July and begin what promises to be one of the most exciting
missions in planetary exploration history. After years of work, scientists
have just completed plans for Cassini's observations of Saturn's largest
moon, Titan.
Cassini/Huygens
Closing In On The Lord Of The Rings. Paris - Jan 21, 2004
This time next year, ESA's Huygens spaceprobe will be descending through
the atmosphere of Saturn's largest moon, becoming the first spacecraft to
land on a body in the outer Solar System.
Uranus
Keck Zooms
In On The Weird Weather Of Uranus. Louisville KY (SPX) Nov 11, 2004
Capitalizing on the incomparable optical capabilities of the Keck Telescope,
scientists have gained an unprecedented look at the atmosphere of Uranus,
providing new insight into some of the most enigmatic weather in the solar
system.
Enigma Of Uranus
Solved At Last Paris (AFP) - Mar 10, 2004
Uranus has puzzled scientists ever since the probe Voyager 2 did a flyby
in 1986 and found that its magnetic field appeared to break the planetary
rulebook. The evidence from Earth, Jupiter and Saturn determined that a
planet's magnetic field should be like that of a bar magnet, with a north
and south pole that runs roughly along the sphere's rotational axis.
A Colorful
Life In The Outer Planets. Baltimore - Jan 27, 2004
Atmospheric features on Uranus and Neptune are revealed in images taken
with the Space Telescope Imaging Spectrograph and the Advanced Camera for
Surveys aboard NASA's Hubble Space Telescope. A wider view of Uranus reveals
the planet's faint rings and several of its satellites. The observations
were taken in August 2003.
Neptune
Discovery
of five irregular moons of Neptune
MATTHEW J. HOLMAN et al.
A Colorful
Life In The Outer Planets. Baltimore - Jan 27, 2004
Atmospheric features on Uranus and Neptune are revealed in images taken
with the Space Telescope Imaging Spectrograph and the Advanced Camera for
Surveys aboard NASA's Hubble Space Telescope. A wider view of Uranus reveals
the planet's faint rings and several of its satellites. The observations
were taken in August 2003.
Pluto
Comets/Asteroids
The Geminid Meteor
Shower Huntsvile AL (SPX) Dec 07, 2004
The best meteor shower of 2004 is about to peak on a long cold December
night. It's the Geminids. The best time to look is Monday night, Dec. 13th.
Sky watchers who stay outside for a few hours around midnight can expect
to see dozens to hundreds of "shooting stars."
Cooking On A Comet..?
Paris (ESA) Aug 20, 2004
One of the ingenious instruments on board Rosetta is designed to 'smell'
the comet for different substances, analysing samples that have been 'cooked'
in a set of miniature ovens. ESA's Rosetta will be the first space mission
ever to land on a comet.
What Is A Comet
Made Of? Davis CA (SPX) Aug 10, 2004
A new method for looking at the composition of comets using ground-based
telescopes has been developed by chemists at UC Davis. Remnants from the
formation of our solar system, the makeup of comets gives clues about how
the Earth and other planets formed.
NASA
Spacecraft Reveals Surprising Anatomy Of A Comet
Findings from a historic encounter between NASA's Stardust spacecraft and
a comet have revealed a much stranger world than previously believed. The
comet's rigid surface, dotted with towering pinnacles, plunging craters,
steep cliffs, and dozens of jets spewing violently, has surprised scientists.
Did Comets
Flood Earth's Oceans? Paris (ESA) Jun 17, 2004
Did the Earth form with water locked into its rocks, which then gradually
leaked out over millions of years? Or did the occasional impacting comet
provide the Earth's oceans? The Ptolemy experiment on Rosetta may just find
out
Loneos Discovers
Asteroid With The Smallest Orbit. Flagstaff AZ (SPX) May 24, 2004
The ongoing search for near-Earth asteroids at Lowell Observatory has yielded
another interesting object. Designated 2004 JG6, this asteroid was found
in the course of LONEOS (the Lowell Observatory Near-Earth Object Search)
on the evening of May 10 by observer Brian Skiff.
Halley's
Comet Portrayed on Ancient Coin. May 19, 2004
A rare ancient coin may feature an early record of Halley's Comet, researchers
say. The coin features the head of the Armenian king Tigranes II the Great,
who reigned from 95 to 55 B.C. A symbol on his crown that features a star
with a curved tail may represent the passage of Halley's comet in 87 B.C.,
say the Armenian and Italian researchers.
Evidence That
Asteroids Change Color As They Age. Honolulu (SPX) May 19, 2004
In an article published this week in the journal Nature, a team led by Robert
Jedicke of the University of Hawaii's Institute for Astronomy provides convincing
evidence that asteroids change color as they age.
Two Comets
Glow In Morning Sky. Los Angeles - Apr 28, 2004
Seven years have passed since Comet Hale-Bopp graced the evening sky in
the spring of 1997. Now not just one but two new comets are heading into
springtime view -- though they won't come near Hale-Bopp for brightness
and grandeur.
Spaceguard
Redux, Put to Test. Moffett Field - Mar 22, 2004
A small near-Earth asteroid (NEA), discovered Monday night by the NASA-funded
LINEAR asteroid survey, made the closest approach to Earth ever recorded.
There was no danger of a collision with the Earth during this encounter.
Largely as a result of a Congressional mandate, NASA established a "Spaceguard"
program with a goal of finding 90 percent of all the near-Earth asteroids
(NEAs) larger than 1 kilometer in diameter by the end of 2008.
Did
Comet Trigger Great Chicago Fire? March 5, 2004
Perhaps it was not Mrs. O'Leary's cow kicking over a lantern that sparked
the Great Chicago Fire of 1871, which destroyed the downtown area and claimed
300 lives. New research lends credence to an alternative explanation: The
fire, along with less-publicized and even more deadly blazes the same night
in upstate Wisconsin and Michigan, was the result of a comet fragment crashing
into Earth's atmosphere.
Silicate Stardust
Found In A Meteorite St. Louis - Mar 08, 2004
Ann Nguyen chose a risky project for her graduate studies at Washington
University in St. Louis. A university team had already sifted through 100,000
grains from a meteorite to look for a particular type of stardust -- without
success.
Ariane 5 Launches
Rosetta On 10 Year Journey To Comet Landing. Paris (AFP) Mar 02, 2004
A European rocket lifted off from Kourou, French Guiana, Friday at the start
of a 10-year mission to explore a comet, one of the most ambitious and costliest
projects in the history of space exploration, a live television feed from
the launch base showed.
Ulysses Catches
Another Comet. Paris (ESA) Feb 13, 2004
Ulysses is not normally associated with the study of comets. Nonetheless,
the European-built space probe demonstrated its ability as a "comet
catcher" when it crossed the distant tail of comet Hyakutake (C/1996
B2) in 1996.
NASA Spacecraft
Makes Great Catch..Heads for Touchdown. Pasadena - Jan 05, 2004
Team Stardust, NASA's first dedicated sample return mission to a comet,
passed a huge milestone Friday by successfully navigating through the particle
and gas-laden coma around comet Wild 2 (pronounced "Vilt-2").