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Joined: May 2010
Posts: 11,916 Likes: 30
BellaOnline Editor Renaissance Human
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OP
BellaOnline Editor Renaissance Human
Joined: May 2010
Posts: 11,916 Likes: 30 |
I'm sheepishly admitting that at first glance I thought I was looking at a picture of some sort of sea creature. However it is, in fact, Hebes Chasma on Mars. It's an enclosed trough with a flat-topped mesa in the center. "It's nearly 8 km deep and stretches "315 km in an east–west direction and 125 km from north to south at its widest point." It's a mosaic made up of eight single images that were taken with the High Resolution Stereo Camera on ESA's Mars Express orbiter. Credit: ESA/DLR/FU Berlin (G. Neukum), CC BY-SA 3.0 IGO
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Joined: Apr 2002
Posts: 7,113 Likes: 52
Chimpanzee
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Chimpanzee
Joined: Apr 2002
Posts: 7,113 Likes: 52 |
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Joined: Jan 2013
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Highest Posting Power Known to Humanity
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Highest Posting Power Known to Humanity
Joined: Jan 2013
Posts: 16,487 |
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Joined: May 2010
Posts: 11,916 Likes: 30
BellaOnline Editor Renaissance Human
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OP
BellaOnline Editor Renaissance Human
Joined: May 2010
Posts: 11,916 Likes: 30 |
Here's an image that looks as though it could have been taken on Earth. But NASA's Curiosity rover took it on Mars in 2014. It shows a pattern typical of a lake-floor sedimentary deposit near where flowing water entered a lake. Shallow and deep parts of an ancient Martian lake left different clues in mudstone formed from lakebed deposits. Credits: NASA/JPL-Caltech/MSSS
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Joined: Jan 2013
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Highest Posting Power Known to Humanity
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Highest Posting Power Known to Humanity
Joined: Jan 2013
Posts: 16,487 |
It is like this was taken on Earth!
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Joined: May 2010
Posts: 11,916 Likes: 30
BellaOnline Editor Renaissance Human
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OP
BellaOnline Editor Renaissance Human
Joined: May 2010
Posts: 11,916 Likes: 30 |
What created this unusual hole in Mars/, Astronomy Picture of the Day asks. A leading hypothesis is that it was created by a meteor impact. Holes such as this are of particular interest because they might be portals to lower levels that extend into expansive underground caves. If so, these naturally-occurring tunnels are relatively protected from the harsh surface of Mars, making them relatively good candidates to contain Martian life. These pits are therefore prime targets for possible future spacecraft, robots, and even human interplanetary explorers. Image Credit: NASA, MRO, HiRISE, JPL, U. Arizona
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Joined: May 2010
Posts: 11,916 Likes: 30
BellaOnline Editor Renaissance Human
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OP
BellaOnline Editor Renaissance Human
Joined: May 2010
Posts: 11,916 Likes: 30 |
Here is a splendid picture of Vera Rubin ridge on Mars. Breathtaking panorama and if you click to enlarge, amazing detail. It's hard to believe that it's another world.
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Joined: Apr 2002
Posts: 7,113 Likes: 52
Chimpanzee
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Chimpanzee
Joined: Apr 2002
Posts: 7,113 Likes: 52 |
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Joined: May 2010
Posts: 11,916 Likes: 30
BellaOnline Editor Renaissance Human
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OP
BellaOnline Editor Renaissance Human
Joined: May 2010
Posts: 11,916 Likes: 30 |
NASA's Curiosity Mars rover examined a mudstone outcrop area called 'Pahrump Hills' on lower Mount Sharp, in 2014 and 2015. Blue dots indicate where drilled samples of powdered rock were collected for analysis. Scientists learned a good deal about past Martian environments here. For example, in the "Confidence Hills" and "Mojave 2" samples, they found clay minerals. These generally form in the presence of liquid water with a near-neutral pH, and therefore suggest past environments that were conducive to life. However the other mineral discovered here was jarosite, a salt that forms in acidic solutions. The jarosite indicates that there were acidic fluids at some point in time in this region.
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Joined: May 2010
Posts: 11,916 Likes: 30
BellaOnline Editor Renaissance Human
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OP
BellaOnline Editor Renaissance Human
Joined: May 2010
Posts: 11,916 Likes: 30 |
One of Curiosity's navcams took the picture of Curiosity Leaving Tracks in the Martian Sand. The rover is headed back to the path leading to the Vera Rubin Ridge access ramp. Each wheel track is 40 cm wide. Credit: NASA/JPL-CalTech
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