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Fri Jan 18, 2013, 06:21 PM

New discovery of ancient river supports theory that water once flowed on Mars

Source: Cleveland Leader



A team of scientists from the European Space Agency have reportedly discovered an ancient riverbed on Mars, which is just the latest piece of evidence to support the theory that water once flowed across the Martian surface. The photos were taken last year, and were released late on Thursday by the ESA.

ESA officials made the announcement on Thursday that they have discovered an ancient riverbed carved into the Red Planet's surface. The images were taken by the ESA's Mars Express, and have left astronomers around the world stunned as this may be the most definitive evidence to date that supports the theory that water once flowed on Mars.

The area, which is known as Reull Vallis, contains a river-like channel that likely formed billions of years ago. The channel, which is 1,500-km in length, is lined with tributaries that look to resemble tributaries found on Earth. Interestingly, the river is as wide as 4 miles at some points. Astronomers say that at some points the river is nearly 1,000 feet deep, and may be one of the most geologically important features on Mars.

Scientists speculate that due to the depth of the channel, the riverbed was once occupied by water and large chunks of ice. According to geologists, water likely flowed through Reull Vallis between 3.5 to 1.8 billion years ago during a time known as the Hesperian period. Further research is needed to confirm the age of the channel.

Read more: http://www.clevelandleader.com/node/19890

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Reply New discovery of ancient river supports theory that water once flowed on Mars (Original post)
Redfairen Jan 2013 OP
abq e streeter Jan 2013 #1
Qutzupalotl Jan 2013 #2
paleotn Jan 2013 #4
LongTomH Jan 2013 #7
2on2u Jan 2013 #3
formercia Jan 2013 #5
daleo Jan 2013 #6
joshcryer Jan 2013 #10
AsahinaKimi Jan 2013 #8
watrwefitinfor Jan 2013 #9

Response to Redfairen (Original post)

Fri Jan 18, 2013, 06:36 PM

1. Till they took away their guns, let gay Martians get married

and stopped prayer in schools. NOW look at 'em....

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Response to Redfairen (Original post)

Fri Jan 18, 2013, 06:53 PM

2. Canali!

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Response to Qutzupalotl (Reply #2)

Fri Jan 18, 2013, 08:34 PM

4. He He....

.. I guess ole Lowell and Schiaparelli were right after all. Well, sort of.

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Response to Qutzupalotl (Reply #2)

Fri Jan 18, 2013, 10:20 PM

7. Looks like the Ancient Martians were pretty good engineers

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Response to Redfairen (Original post)

Fri Jan 18, 2013, 08:28 PM

3. But but but..... mars is only 9000 years old!!11!!!! Cool stuff, now if they can find a piece

 

of the ark.... or not.

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Response to Redfairen (Original post)

Fri Jan 18, 2013, 08:45 PM

5. Then why are there no impact craters in the Riverbed.

If it was as old as they say, there should be an even distribution of Impact Craters on the surface.

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Response to formercia (Reply #5)

Fri Jan 18, 2013, 09:32 PM

6. Good point

Unless all of the impact craters in the photo are extremely ancient.

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Response to formercia (Reply #5)

Sat Jan 19, 2013, 07:58 AM

10. There are, this is a really lucky spot where we can say "hey, that's a riverbed."

If you look at the area, this is the only swath of "land" / "geography" that is un-obscured by meteorite impacts. This is an astounding find. It's fairly short, the rest of the area is just peppered and unconvincing as a "riverbed." They literally spotted something that was uncharacteristic of the overall landscape.

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Response to Redfairen (Original post)

Fri Jan 18, 2013, 10:59 PM

8. It would be interesting

to know if there are any ancient fossils in that seabed, even if they were tiny crusty micro organisms. If life came from the sea, or from a River, the answer would be there.

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Response to Redfairen (Original post)

Sat Jan 19, 2013, 07:31 AM

9. So, does it flow into an ancient ocean bed? n/t

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