Buried glaciers have enough ice to cover entire surface of Mars, according to new study

Image of dust-covered glaciers on Mars from the High Resolution Stereo Camera on Mars Express. The glaciers are composed of water ice. Image Credit: ESA/DLR/FU Berlin
Image of dust-covered glaciers on Mars from the High Resolution Stereo Camera on Mars Express. The glaciers are composed of water ice. Image Credit: ESA/DLR/FU Berlin

When the topic of ice on Mars comes up, the first thing that usually comes to mind are the polar ice caps which are prominent even in small telescopes. There is, however, ice elsewhere on the planet as well, such as beneath the surface in the mid-latitudes, covered by dust. Now, a new study has revealed the extent of these subsurface glaciers and the amount of frozen water they contain.

Read MoreBuried glaciers have enough ice to cover entire surface of Mars, according to new study

Unusual oval pit near Galaxias Chaos on Mars

Oval pit or crater with opening in the bottom, as photographed near Galaxias Chaos on Mars by the HiRISE camera on the Mars Reconnaissance Orbiter spacecraft. Click for larger version. Credit: NASA/JPL/University of Arizona
Oval pit or crater with an opening in the bottom, as photographed near Galaxias Chaos on Mars by the HiRISE camera on the Mars Reconnaissance Orbiter spacecraft. Click for larger version. Credit: NASA/JPL/University of Arizona

This is interesting, a recent HiRISE photo from the Mars Reconnaissance Orbiter spacecraft showing an oval pit or crater with an opening in the bottom (cropped here from one of the larger images) near Galaxias Chaos on Mars. The opening is also oval, and you can see some sand dunes on the bottom. How did it form? More images are available here.

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Ancient delta is newest evidence for Martian ocean

Topographic map from Mars Global Surveyor showing part of the lowlands region in the northern hemisphere (blue) which is thought to have once been an ocean. Credit: NASA / MOLA
Topographic map from Mars Global Surveyor showing part of the lowlands region in the northern hemisphere (blue) which is thought to have once been an ocean. Credit: NASA / MOLA

Whether or not Mars once had an ocean has been a subject of much debate for many years. There is substantial evidence pointing toward the possibility, but no “smoking gun” yet. Now, a new discovery from scientists at the California Institute of Technology (Caltech) is fueling that debate again – an ancient delta that appears to have emptied into the hypothetical ocean in the northern hemisphere.

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Old Soviet Mars 3 lander discovered?

Set of images showing possible hardware from the Mars 3 landing in 1971. Click for larger version. Credit: NASA / JPL-Caltech / University of Arizona
Set of images showing possible hardware from the Mars 3 landing in 1971. Click for larger version. Credit: NASA / JPL-Caltech / University of Arizona

A “missing” Mars lander and its associated hardware from the 1970s may have finally been discovered in images taken by the Mars Reconnaissance Orbiter. The Soviet Mars 3 lander was the first successful landing on Mars by any spacecraft, but after transmitting for only 14.5 seconds after touchdown on December 2, 1971, it went silent and was never heard from again. Its exact landing site was unknown, but now may have finally been located after all these years.

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Rovers keeping an eye on Martian dust storm

Mosaic image showing the dust storm in the southern hemisphere of Mars as of November 18, 2012. The locations of the Curiosity and Opportunity rovers are also marked.
Credit: NASA / JPL-Caltech / Malin Space Science Systems

A large seasonal dust storm has been growing in the southern hemisphere of Mars over the last couple of weeks, and both rovers, Curiosity and Opportunity, have been monitoring its extent and progress, as well as Mars Reconnaisance Orbiter.

Read MoreRovers keeping an eye on Martian dust storm