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Rain on Mars 3bn years ago
Daily Telegraph (Australia) ^ | 07/02/04

Posted on 07/01/2004 12:31:29 PM PDT by Pokey78

MARS was not only awash with water, it also once had rainfall, according to a new French study.
The evidence comes from infra-red imaging, which probed under dust deposited over the millions of years and found dense networks of dry valleys, whose branching bear the hallmarks of having been carved out by rain.

The research, published in the US journal Science on Friday, could prompt a rewrite of the Martian history books, for it suggests the planet had a longer "summer" than anyone thought.

The conventional theory is that Mars had a balmy climate during its infancy, a period called the Noachian era, in which vast volumes of water flowed on its surface, cutting valleys and eroding the craters left by asteroids.

Then, around 3.6 billion years ago - coincidentally, just when the first signs of life emerged on Earth - the planet froze, entering the so-called Hesperian epoch, which lasted around half a billion years.

What remained as water has almost always been locked up as ice, either at the poles or (so it is hoped) close to the surface, according to this theory.

The French study, led by Nicolas Mangold of the University of Paris South, contends though that the rain-carved valleys date from near the end of the Hesperian - at a time when the temperature was, supposedly, far too cold to permit precipitation.

Their analysis is based on data sent back the thermal Emission Imaging System (THEMIS), which has been scanning the planet since October 2001 aboard a NASA orbiter, Mars Odyssey.

THEMIS' images show images of valleys with extensive branching, typical of the erosion on Earth caused by rainwater, as well as meandering curves and inner channels on the valley floors.


TOPICS: Culture/Society; News/Current Events
KEYWORDS: mars

1 posted on 07/01/2004 12:31:29 PM PDT by Pokey78
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To: Pokey78
THEMIS' images show images of valleys with extensive branching, typical of the erosion on Earth caused by rainwater, as well as meandering curves and inner channels on the valley floors.

This is another judgement of God on His creation?

2 posted on 07/01/2004 12:42:18 PM PDT by maestro
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To: Pokey78
Rain on Mars 3bn years ago

And then George Bush, Republicans, Big Oil and Haliburton introduced the SUV at the Martian Auto Show.

3 posted on 07/01/2004 12:45:30 PM PDT by N. Theknow (Kennedy family legacy - can't skipper a boat, can't fly, can't drive, can't ski)
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To: Pokey78

Current THEORY also says the sun was a lot hotter and the earth like an oven about that time.


4 posted on 07/01/2004 12:48:23 PM PDT by staytrue
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To: Pokey78

It looks like the Corps of Engineers may be needed to determine if all of Mars should be declared wetlands.


5 posted on 07/01/2004 12:57:34 PM PDT by 17th Miss Regt
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To: Pokey78

Should have held Wimbledon there this year.


6 posted on 07/01/2004 1:08:19 PM PDT by aardvark1 (I am doing this because I can.)
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To: maestro

"............French study."


Remember, they have to drink their own wine these days since they can't export it.


7 posted on 07/01/2004 1:15:58 PM PDT by PeterPrinciple
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To: PeterPrinciple
Hi......

LOL

(Hope you guys are all o.k.)

:-)

8 posted on 07/01/2004 1:19:08 PM PDT by maestro
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To: Pokey78
This is from the same meterologists that can't tell me whether or not it's going to rain tonight?

/john

9 posted on 07/01/2004 1:24:39 PM PDT by JRandomFreeper (But what do I know, I'm just a cook. No disguta conmigo!)
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To: Pokey78

If we were able to convince Bush that the Martians have WMD, then can we go to Mars?


10 posted on 07/01/2004 1:50:53 PM PDT by wyattearp (The best weapon to have in a gunfight is a shotgun - preferably from ambush.)
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To: maestro
This is another judgement of God on His creation?

I wonder what horrors the Martian rocks did to piss Him off so?
11 posted on 07/01/2004 2:12:41 PM PDT by gcruse (http://gcruse.typepad.com/)
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To: aardvark1
Should have held Wimbledon there this year.

Don't you mean the French Open (which is played on clay)?

12 posted on 07/01/2004 2:31:31 PM PDT by nonsporting
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To: gcruse
Same old same old......."Took the temporary "Curse of Sin because of Adam's Sin, lack of respect, praise, glory, honor, thankfulness,.......resulting in the 1st Law of Thermodynamics?"

Hasahmayim wet?

13 posted on 07/01/2004 2:32:22 PM PDT by maestro
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To: Pokey78

How the hell would the French know anything about Mars? Their little robot never survived the landing....hehehehehe.


14 posted on 07/01/2004 3:56:33 PM PDT by Defiant (Moore-On: That throbbing anticipation felt by a liberal hoping for America's defeat.)
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To: Defiant
Way back in ye olden days, a guy from Sicily discovered "canals" on Mars, and for 150 years afterwards, any eurostronomer worth his brioche could watch them "wax and wane" in intense hues of green with the "seasons." "Ice Caps," too.

What the hell happened to those Martian "canals?" Heinlein knew about them, in fact in his sci-fi books, Martian colonists used ice-skates for transportation!

Now the Frogs turn this into big news? Qu'est que c'est, mes amis?

15 posted on 07/01/2004 4:21:00 PM PDT by Kenny Bunk
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To: Pokey78

This shure does look like water!!!

Has there already been a thread created for this?

16 posted on 07/17/2004 4:52:23 PM PDT by DB (©)
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To: DB
Let's try that again...

This sure does look like water!!!

17 posted on 07/17/2004 4:53:55 PM PDT by DB (©)
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To: JRandomFreeper

Yes, but they can always tell you the next day after it did rain.


18 posted on 07/17/2004 4:55:25 PM PDT by Bob J (Rightalk.com...coming soon!)
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