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Latest Hellas Planitia Stories

Forces Of Martian Nature
2014-07-11 03:24:38

ESA The surface of Mars is pocked and scarred with giant impact craters and rocky ridges, as shown in this new image from ESA’s Mars Express that borders the giant Hellas basin in the planet’s southern hemisphere. The Hellas basin, some 2300 km across, is the largest visible impact structure in the Solar System, covering the equivalent of just under half the land area of Brazil. The images presented here were taken on 13 January 2014 by the high-resolution stereo camera on Mars...

Images Beneath Mars Surface
2013-08-12 12:09:33

Brett Smith for redOrbit.com - Your Universe Online A newly released image from the European Space Agency (ESA) offered a groundbreaking peek under the surface of Mars courtesy of the international agency’s Mars Express orbiter. Using ground penetrating radar, the spacecraft was able to image the composition of Mars several miles below the surface, revealing various layers of ice, dust and rock. The image essentially revealed a 3,500-mile slice through the planet’s southern...

Mars Express Orbiter Snaps Image Of River-Like Formation On Surface Below
2013-01-18 16:04:26

Lee Rannals for redOrbit.com — Your Universe Online The European Space Agency's (ESA) Mars Express has offered up a high-resolution photo of a river-like structure on Mars. The spacecraft used its high-resolution stereo camera last year to snap an image of Reull Vallis on the Red Planet. Reull Vallis is a river-like structure believed to have formed when running water flowed in the distant martian past. The ancient river bed cuts a steep-sided channel through the Promethei...

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2010-06-08 13:45:00

Scientists have found further evidence that massive seas once existed on Mars. A geological mapping project discovered sedimentary deposits in a region called Hellas Planitia, which suggests it was once a large sea. The 1,200 mile wide basin is a giant impact crater, the largest one on Mars. The team says their data supports the theory that a lake existed there between 4.5 and 3.5 billion years ago. Some scientists believe that conditions on Mars were more favorable for the evolution of...

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2009-07-24 07:25:00

The Mars Express High Resolution Stereo Camera imaged a region close to Ma'adim Vallis, one of the largest canyons on Mars, finding craters, lava flows and tectonic features.After Valles Marineris, Ma'adim Vallis is one of the largest canyons on Mars. The region, lying south-east of Ma'adim Vallis, was imaged on 24 December 2008. The pictures are centered at about 29°S and 182°E and have a ground resolution of 15 m/pixel. Ma'adim Vallis is located between the volcanic region of...

2008-11-20 13:05:00

U.S. scientists said Thursday they discovered vast water glaciers under blankets of rocky debris on Mars, suggesting possible life beyond Earth. These results are the smoking gun, said Ali Safaeinili, a shallow-radar instrument team member with NASA's Jet Propulsion Laboratory in Pasadena, Calif. The glaciers are the largest reservoir of water ice found on Mars that isn't at the polar caps, John Holt of the University of Texas at Austin's Jackson School of Geosciences wrote the journal...

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2008-11-20 13:50:00

NASA's Mars Reconnaissance Orbiter has revealed vast Martian glaciers of water ice under protective blankets of rocky debris at much lower latitudes than any ice previously identified on the Red Planet. Scientists analyzed data from the spacecraft's ground-penetrating radar and report in the Nov. 21 issue of the journal Science that buried glaciers extend for dozens of miles from the edges of mountains or cliffs. A layer of rocky debris blanketing the ice may have preserved the underground...

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2008-09-22 13:40:00

Scientists are now able to better explain why Mars's residual southern ice cap is misplaced, thanks to data from ESA's Mars Express spacecraft - the martian weather system is to blame. And so is the largest impact crater on Mars "“ even though it is nowhere near the south pole. Like Earth, Mars has frozen polar caps, but unlike Earth, these caps are made of carbon dioxide ice as well as water ice. During the southern hemisphere's summer, much of the ice cap sublimates, a process in...

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2008-06-25 16:45:00

New analysis of Mars' terrain using NASA spacecraft observations reveals what appears to be by far the largest impact crater ever found in the solar system. NASA's Mars Reconnaissance Orbiter and Mars Global Surveyor have provided detailed information about the elevations and gravity of the Red Planet's northern and southern hemispheres. A new study using this information may solve one of the biggest remaining mysteries in the solar system: why does Mars have two strikingly different kinds of...


Word of the Day
reremouse
  • A bat.
The word 'reremouse' comes from Middle English reremous, from Old English hrēremūs, hrērmūs ("bat"), equivalent to rear (“to move, shake, stir”) +‎ mouse.
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