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Mars Reconnaissance Orbiter

Collapsed Pit On Mars Reveals Subterranean Cave

You know what’s cool? Caves. You know what’s cooler than caves? Caves on Mars. This image, captured with the HiRise camera aboard the Mars Reconnaissance Orbiter (MRO), shows a large bowl-like depression in the Martian landscape. At the apex of the depression, an entrance to a subterranean level of the planet can clearly be seen. Keep in mind that it is a false-color image, but that doesn’t make it any less striking.

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Potential Water Discovered On Mars, Still Not a Sign of Alien Life

Every time NASA holds a press conference it is completely impossible not to start thinking, well maybe they’ve done it this time, maybe they’ve found alien life. It happened when the Internet got carried away with the arsenic life debacle last year. So, when NASA said they had a special announcement about Mars, who didn’t start hoping for aliens, really? But, alas, once again NASA has not found life on Mars. What they did find, pictured in the image above, is water. Or, what is most likely, probably, should be, water of some kind.

Now, liquid water on Mars, that is pretty cool. But what is the evidence? Images gathered by NASA’s Mars Reconnaissance Orbiter have showed dark, finger-like features that appear and extend down some of the slopes on Mars’ surface. These features appear during the warmest months on Mars, and retreat as it gets colder, leading to the conclusion that it could possibly be the result of water flowing on or beneath Mars’ surface.

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A Living Planet: Avalanches on Mars

We usually think of the other planets in our solar system as relatively peaceful, unchanging. It’s sort of a “tree falls in the forest” situation. If there’s no life, how active can they really be? The storm on Jupiter is a swirling maelstrom, sure, but it’s a swirling maelstrom that’s been around for over two hundred years.

And yet… spring is approaching the northern hemisphere of Mars, thawing the carbon dioxide ice that’s built up along cliff faces. And when you get thawing ice on cliff faces, you also get…

Avalanches.

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