Evidence of massive asteroid impact on Mars supported by computer simulations: related news

Evidence Of Massive Asteroid Impact On Mars Supported By Computer Simulations

The dramatic differences between the northern and southern hemispheres of Mars have puzzled scientists for 30 years. One of the proposed explanations--a massive asteroid impact--now has strong support from computer simulations carried out by two groups of researchers. Planetary scientists at the University of California, Santa Cruz, were involved in both studies, which appear in the June 26 issue of Nature.

Computer Simulations Show Asteroid Impact On Mars Possible

The dramatic differences between the northern and southern hemispheres of Mars have puzzled scientists for 30 years. One of the proposed explanations--a massive asteroid impact--now has strong support from computer simulations carried out by two groups of researchers. Planetary scientists at the University of California, Santa Cruz, were involved in both studies, which appear in the June 26 issue of Nature.

Evidence of Massive Asteroid Impact on Mars?

The dramatic differences between the northern and southern hemispheres of Mars have puzzled scientists for 30 years. One of the proposed explanations -- a massive asteroid impact -- now has strong support from computer simulations carried out by two groups of researchers. Planetary scientists at the University of California, Santa Cruz, were involved in both studies.

Evidence of massive asteroid impact on Mars supported by computer simulations

The dramatic differences between the northern and southern hemispheres of Mars have puzzled scientists for 30 years.

Huge Impact Created Mars' Split PersonalityStudy: Mars Had Drizzle and DewAstronomers on Verge of Finding Earth's TwinPhoenix Lander Prepares to Taste Martian DirtBlack Holes All Eat the Same Way

This artistic representation of a giant impact on Mars was created from simulations by Marinova et al. (Nature, 2008). Mars is shown using a combination of Viking color images and shaded relief from the Mars Orbiter Laser Altimeter (MOLA). Credit: Jeff Andrews-Hanna

Gravity Tractor Could Deflect Asteroids

Hugh Pickens writes "A new study at the Jet Propulsion Labs shows that weak gravitational pull of a "gravity tractor" could deflect an Earth-threatening asteroid if it was deployed when the asteroid was at least one orbit away from potential impact with Earth. First a spacecraft would be crashed directly into the asteroid, similar to the Deep Impact mission that impacted a comet in 2005. This would provide a big change of direction, but in a less controllable fashion that could push the path of the asteroid into a dangerous keyhole. But then a second spacecraft, the gravity tractor, would come into play, hovering about 150 meters away from the asteroid, to exert a gentle gravitational force, changing the asteroid's velocity by only 0.22 microns per second each day.

11th Annual Mars Society Convention on 14th-17th August

Next week, Boulder, Colorado will play host to the eleventh annual Mars Society conference. There will be a huge array of speakers, lectures and workshops anyone can get involved in to learn more about the future of manned exploration on Mars. The Mars Society is an international organization working to raise public awareness about the opportunities we have on Mars and push for eventual manned settlements. Primarily, the Mars Society is pushing for better governmental spending in planetary missions, but there is an increasing awareness that many aims can only be achieved through private enterprise. The organization doesn't limit itself to political activities. For years the organization has managed a series of "Mars Analogues," isolated habitats where volunteers carry out extended experiments, studying everything from human psychology in

Asteroid slammed into Mars' northern hemisphere

An asteroid the size of Pluto that slammed into the Northern hemisphere of Mars created the Borealis basin, based on the latest survey of NASA's Mars Reconnaissance Orbiter and Mars Global Surveyor.

Mars Polar Lander, USA

The Mars Surveyor '98 Programme comprised of two spacecraft launched separately, the Mars Climate Orbiter (formerly the Mars Surveyor '98 Orbiter) launched in 1996 and the Mars Polar Lander (formerly the Mars Surveyor '98 Lander).

Mars Polar Lander - Space Probe, USA

The Mars Surveyor '98 Programme was comprised of two spacecraft launched separately: the Mars Climate Orbiter (formerly the Mars Surveyor '98 Orbiter) launched in 1996, and the Mars Polar Lander (formerly the Mars Surveyor '98 Lander).

Mars Water? Photo Evidence Shows Mars Once Was Wet All Over

WASHINGTON (Reuters) - Minerals in the soil of Mars show it was covered once by lakes, rivers and other bodies of water that could have supported life, U.S. researchers reported on Wednesday.

NASA Spacecraft Shows Diverse, Wet Environments on Ancient Mars

WASHINGTON, July 16 /PRNewswire-USNewswire/ -- Two studies based on data from NASA's Mars Reconnaissance Orbiter have revealed that the Red Planet once hosted vast lakes, flowing rivers and a variety of other wet environments that had the potential to support life. One study, published in the July 17 issue of Nature, shows that vast regions of the ancient highlands of Mars, which cover about half the planet, contain clay minerals, which can form only in the presence of water. Volcanic lavas buried the clay-rich regions during subsequent, drier periods of the planet's history, but impact craters later exposed them at thousands of locations across Mars. The data for the study derives from images taken by the Compact Reconnaissance Imaging Spectrometer for Mars, or CRISM, and other instruments on the orbiter.

Asteroid smash turned Mars into 'takeaway pizza' planet - Premium content

Kaboom! When a giant impact whacked into a young Mars around 4 billion years ago, the impact made such a huge dent in the northern hemisphere that it left the entire planet lop-sided.

Scientists think big impact caused two-faced Mars

Why is Mars two-faced? Scientists say fresh evidence supports the theory that a monster impact punched the red planet, leaving behind perhaps the largest gash on any heavenly body in the solar system.

Exploding Asteroid Theory Gains Evidence

About 13,000 years ago, woolly mammoths roamed the North American continent and the first known human society in that region, known as the Clovis civilization, lived there as well. But geologic and archeological evidence shows they both suddenly disappeared, and scientists have long debated the mystery of the mass extinction of both animals and humans about 12,900 years ago. At that time, climatic history suggests the Ice Age should have been drawing to a close, but instead rapid climate change initiated an additional 1,300 years of glacial conditions. But scientists couldn't agree on the cause of the sudden change in climate. However, about two years ago geophysicist Allen West proposed that an asteroid or comet exploded just above the earth’s surface at that time over modern-day Canada, sparking a massive shock wave and heat-generatin

Mars bake test hastened after oven short circuit

This artist rendition provided by NASA and the Jet Propulsion Laboratory shows the Phoenix lander on the arctic plains of Mars digging a trench through the upper soil layer. The Phoenix Mars lander suffered a short circuit several weeks ago to one of its eight tiny test ovens. Scientists fear another outage could render the crucial equipment useless. This artist rendition provided by NASA and the Jet Propulsion Laboratory shows the Phoenix lander on the arctic plains of Mars digging a trench through the upper soil layer. The Phoenix Mars lander suffered a short circuit several weeks ago to one of its eight tiny test ovens. Scientists fear another outage could render the crucial equipment useless. (AP Photo/NASA-JPL, Cory Waste)

Binary Asteroid Glides Past Earth

A rare event has given astronomers a great view of a binary asteroid system. Tonight, asteroid 2008 BT18 passed 1.4 million miles from Earth, shining like a 13th magnitude star. Before July 7th, astronomers believed 2008 BT18 was "just another" near-Earth asteroid, but then the Arecibo radio telescope obtained a "delay-Doppler" image of the asteroid and found it in fact had a binary partner. Although binaries are fairly common in the Solar System, this was a rare opportunity for a ground-based telescope to capture such a clear view…

Scientists confirm water on Mars

A full circle panoramic view of Mars taken by NASA's Phoenix Mars Lander is shown in this undated handout photo released to Reuters July 31, 2008. NASA scientists said on Thursday they had definitive proof that water exists on Mars after further tests on ice found on the planet in June by the Phoenix Mars Lander. (Xinhua/Reuters Photo)

NASA shoots down Mars rumors: we're not sure what we've got

Over the weekend, rumors started rebounding around the Internet: initial work from the Mars Phoenix lander had found something that was evidence relevant to the possibility of life on Mars, and the President had been briefed. Before the jokes regarding the President and intelligent life had subsided, other rumors suggested that NASA had found a toxin that was incompatible with life. NASA decided to end the speculation, and dragged members of the Phoenix team into an early-afternoon press conference. Phoenix may have found an abundance of a specific chemical on Mars, but the researchers involved aren't even sure what it is yet.

NASA probe confirms ice on Mars

NASA scientists say photos sent from Mars by the Phoenix Lander confirm ice on the red planet. The presence of water is crucial for research because it helps answer questions on whether life forms, perhaps microbes, exist or existed on Mars. Phoenix dug a trench near Mars' north pole and a sequence of photos shows eight white chucks slowly vanishing. Over the next few weeks Phoenix will analyse the Martian soil and look for organic material. In 2002 another unmanned craft, the Mars Odyssey Orbiter first detected what's thought to be a vast sheet of ice under the barren polar surface.

Bits of Ancient Earth Hidden on the MoonHuge Impact Created Mars' Split PersonalityStudy: Mars Had Drizzle and DewAstronomers on Verge of Finding Earth's TwinPhoenix Lander Prepares to Taste Martian DirtBlack Holes All Eat the Same Way

Meteorites have been found in Antarctica that are believed to come from Mars. Similarly, some scientists now believe that material ejected from the early Earth may have arrived as meteorites on the moon. Credit: NASA

Is the largest asteroid Pluto's wayward cousin?

DOES Pluto have a wayward cousin lurking in the inner solar system? The dwarf planet Ceres - and other icy chunks - may have been born in the same realm as Pluto, but travelled all the way to the asteroid belt between the orbits of Mars and Jupiter. If so, it would be further evidence that a massive upheaval rearranged the early solar system.

Life Survived Catastrophic Space Rock ImpactMinerals Needed for Life Found on MarsBits of Ancient Earth Hidden on the MoonHuge Impact Created Mars' Split PersonalityStudy: Mars Had Drizzle and DewAstronomers on Verge of Finding Earth's TwinPhoenix La

From the far reaches of teh solar system, a giant asteroid or comet plunged into Earth near what is now the Chesapeake Bay 35 million years ago (shown in this artist's conception). Credit: © The Virginian-Pilot.

Asteroid may have switched Mars' magnetic field on and off

An asteroid may have flipped Mars' magnetic field on and off like a light switch around 4 billion years ago, says a group of scientists researching on the Red Planet.

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