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Mars: Nasa images show signs of flowing water
BBC.com ^ | 4 August 2011 | Hamish Pritchard

Posted on 08/04/2011 1:01:05 PM PDT by Daffynition

Scientists see dark 'tendrils', signs of flowing water, emerge from rocky Martian outcrops

Striking new images from the mountains of Mars may be the best evidence yet of flowing, liquid water, an essential ingredient for life.

The findings, reported today in the journal Science, come from a joint US-Swiss study.

A sequence of images from the Mars Reconnaissance Orbiter show many long, dark "tendrils" a few metres wide.

(Excerpt) Read more at bbc.co.uk ...


TOPICS: Astronomy; Science
KEYWORDS: catastrophism; ironoxide; yardangs

1 posted on 08/04/2011 1:01:09 PM PDT by Daffynition
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To: Daffynition

All You Need Is Love!


2 posted on 08/04/2011 1:03:48 PM PDT by Berlin_Freeper
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To: Daffynition
Does Mars have gravity?

How can 'water' .. 'flow' ?

3 posted on 08/04/2011 1:07:33 PM PDT by knarf (I say things that are true ... I have no proof ... but they're true)
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To: knarf

Whaaaaaaat? Please tell me this question is some kind of joke...


4 posted on 08/04/2011 1:08:39 PM PDT by bolobaby
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To: Daffynition
Earthlings need to get there fast and teach them how to swim.


5 posted on 08/04/2011 1:09:05 PM PDT by tsowellfan (Let's make the 2012 campaign: "The War on Error")
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To: Berlin_Freeper
All You Need Is Love! And a Vivid Imagination helps.


6 posted on 08/04/2011 1:09:32 PM PDT by itsahoot (--I will still vote for Sarah Palin, even if I have to write her in.--No more traitors.)
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To: knarf

The gravity on mars is about 38% of what it is on earth. A 200 lb man would weigh about 76 lbs on mars. That’s more than enough for a flow of fluid


7 posted on 08/04/2011 1:09:51 PM PDT by muir_redwoods (Somewhere in Kenya, a village is missing an idiot)
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To: knarf
Does Mars have gravity?

Yes, of course, it has mass, therefore it has gravity. Mars has a bit over one third of Earth's gravity.

How can 'water' .. 'flow' ?

An Introduction to Fluid Dynamics

8 posted on 08/04/2011 1:11:00 PM PDT by Yossarian ("All the charm of Nixon. All the competency of Carter." - SF Chronicle comment post on Obama)
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To: Berlin_Freeper

9 posted on 08/04/2011 1:11:42 PM PDT by Daffynition ("Don't just live your life, but witness it also.")
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To: knarf

Aye, any mass has gravity- .38 times your weight equals your weight on Mars. Very interesting, now to get a water sample... thats going to be a long time coming.


10 posted on 08/04/2011 1:13:07 PM PDT by zadox (Government does not solve problems; it subsidizes them. Reagan)
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To: knarf
Physics simplified...


11 posted on 08/04/2011 1:13:37 PM PDT by Daffynition ("Don't just live your life, but witness it also.")
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To: zadox
Testing the water on Mars...


12 posted on 08/04/2011 1:18:22 PM PDT by Daffynition ("Don't just live your life, but witness it also.")
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To: Daffynition

The epa will have to know if it is clean water.


13 posted on 08/04/2011 1:19:27 PM PDT by DWC (historian)
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To: Daffynition

Neil Armstrong and the guys must have peed when they landed there in the 70s.


14 posted on 08/04/2011 1:20:29 PM PDT by Revolting cat! (Let us prey!)
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To: Daffynition
Ndnd: "Lrrr, did you remember to shut off the faucet in the Mars condo?"


15 posted on 08/04/2011 1:24:34 PM PDT by COBOL2Java (Obama is the least qualified guy in whatever room he walks into.)
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To: Daffynition

The atmospheric pressure on Mars is about 1/1000 that of Earth. Any liquid on the surface would evaporate almost instantly.


16 posted on 08/04/2011 1:24:40 PM PDT by Signalman
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To: knarf
Does Mars have gravity?

Knarf old buddy - you are kidding, right?

17 posted on 08/04/2011 1:28:15 PM PDT by Windflier (To anger a conservative, tell him a lie. To anger a liberal, tell him the truth.)
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To: Signalman

remember that is a very salty brine, not pure water. The phase diagram of temp/pressure is shifted.


18 posted on 08/04/2011 1:38:41 PM PDT by thackney (life is fragile, handle with prayer)
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To: Daffynition
You can't tell JACK from that photo. Except for the little Martian face.
19 posted on 08/04/2011 1:43:33 PM PDT by faucetman (Just the facts ma'am, just the facts)
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To: knarf

not really. that’s why the astronauts wear the heavy boots


20 posted on 08/04/2011 1:47:12 PM PDT by sten (fighting tyranny never goes out of style)
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To: Daffynition

Heat from a fairly recent impact may have melted some ice, creating a brief flow episode.


21 posted on 08/04/2011 1:48:57 PM PDT by Old Landmarks (No fear of man, none!)
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To: Windflier
I'm a truck driver .. not a scientist.

Now, I don't know HOW to read that picture of fish scales, but it seems to me a gravitational pull 2/3 less than ours couldn't cause that erosion ... but what do I know ... I drive a truck.

22 posted on 08/04/2011 1:50:17 PM PDT by knarf (I say things that are true ... I have no proof ... but they're true)
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To: knarf

It won’t do it as fast as on earth, but the process is the same.


23 posted on 08/04/2011 1:56:56 PM PDT by thackney (life is fragile, handle with prayer)
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To: Daffynition
Like the swallows to Capistrano (or that poor Nigerian prince), NASA puts this same crappola out every year to shake down the taxpayers.

If Obama gets blamed for killing NASA, it will be his greatest achievement. I'm so sick of these phony Tang drinkers.

24 posted on 08/04/2011 2:09:55 PM PDT by Forgotten Amendments (Days .... Weeks ..... Months .....)
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To: knarf
Does Mars have gravity? How can 'water' .. 'flow' ?

Mars has gravity, and water (at least in the form of ice). It's just damn cold and with very little atmosphere.


25 posted on 08/04/2011 2:12:48 PM PDT by 6SJ7 (atlasShruggedInd = TRUE)
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Boop the Kittehs!

Did You Donate To Free Republic?
Ha Ha Ha! Of Course!


Become a New Monthly Donor and End FReepathons Forever

26 posted on 08/04/2011 2:29:33 PM PDT by TheOldLady (FReepmail me to get ON or OFF the ZOT LIGHTNING ping list.)
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To: Signalman

“The atmospheric pressure on Mars is about 1/1000 that of Earth. Any liquid on the surface would evaporate almost instantly.”

I was just about to say.....


27 posted on 08/04/2011 2:34:10 PM PDT by mowowie
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To: knarf
I'm a truck driver .. not a scientist.

Funny you should say that. I've had several good friends who were truckers, and every one of them had above average I.Q.s and educations. Some of those guys were scary brilliant.

One in particular used to post about advanced physics to a biker forum I belonged to. Most of the time, he seemed like any other Joe, but when he got started on scientific topics, he held the floor.

You're in good company, bud.

28 posted on 08/04/2011 3:16:54 PM PDT by Windflier (To anger a conservative, tell him a lie. To anger a liberal, tell him the truth.)
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To: Forgotten Amendments
I suggest, you *not* watch this

Description: mp3: http://symphonyofscience.com "The Case for Mars" is the sixth installment in the Symphony of Science music video series. It features Robert Zubrin, Carl Sagan, Brian Cox, and Penelope Boston. Samples come from the documentary "The Mars Underground", Cosmos, and Wonders of the Solar System. The video is intended to pique curiosity about the planet Mars and to promote human exploration of it. More science music videos can be found at http://symphonyofscience.com. Enjoy! ~John Lyrics: [Robert Zubrin] Mars is the next logical step In our space program It's the challenge that's been staring us in the face For the past 30 years It has water, it has carbon, It has a 24 hour day It has geothermal energy Mars is a place we can settle [Carl Sagan] There is a giant rift in its surface 5,000 kilometers long There is a volcano as wide as Arizona [Zubrin] So there's the choice in life One either grows or one decays Grow or die I think we should grow [Sagan] Mars is a world of wonders [Brian Cox] It has canyons, river valleys, and giant ice sheets [Sagan] Mars is a world of wonders [Zubrin] It shouldn't be humans to Mars in 50 years It should be humans to Mars in 10 We either muster the courage to go Or we risk the possibility of stagnation and decay We've got cosmic radiation Zero gravity Martian dust storms Back contamination But these are dragons that we can take on [Sagan] In our time we have sifted The sands of Mars Established a presence there And fulfilled a century of dreams [Cox] The Mars rovers have really Captured our imaginations They genuinely are explorers In the old-fashioned sense [Zubrin] If you put out a call For volunteers for the first crew to Mars They'd be lined up coast to coast (refrain) [Cox] Mars is a dry frozen version of our home Covered in red dust and sand [Penelope Boston] At one time In the ancient past Mars was very similar To the conditions of early earth [Zubrin] There will always be people with new ideas On how humans should live together [Cox] We now have "eyes" and "ears" on the surface [Zubrin] What's left after you go is The good you've left behind You have to believe in hope You have to believe in the future There are more and more people coming around to the point of view that A positive future for humanity requires human expansion to space (refrain) We're at a crossroads today We either muster the courage to go Or we risk the possibility of stagnation and decay

29 posted on 08/04/2011 3:58:18 PM PDT by Daffynition ("Don't just live your life, but witness it also.")
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To: 6SJ7
Gustav Holst - The Planets - Mars, the Bringer of War


30 posted on 08/04/2011 4:04:33 PM PDT by Daffynition ("Don't just live your life, but witness it also.")
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To: 75thOVI; agrace; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ...

Mars has yardangs, impact craters, and traces left by short-lived thaws caused by impacts.
Note: this topic is from August 4. Thanks Daffynition.



31 posted on 08/22/2011 4:59:59 PM PDT by SunkenCiv (It's never a bad time to FReep this link -- https://secure.freerepublic.com/donate/)
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To: Daffynition
If you want on my "Life Discovered in Space" ping list please Freep mail, However, this comes with one warning. This is an extremely high volumn ping list with announcements coming almost hourly. We are right now as we speak, trying to catalog the thousands of creatures discovered thus far. Again, every rock overturned, every photograph sent in to NASA by an 6 year old with his Fisher Price telescope is bringing forth a weatlh of new life, rivers, oceans, and so on ...
32 posted on 08/23/2011 3:30:16 AM PDT by Scythian
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To: SunkenCiv; All

Here is another astronomical story you might want to see or pass on.

http://www.huffingtonpost.com/2011/08/25/black-hole-eats-star-video_n_937150.html?ncid=webmail4


33 posted on 08/26/2011 9:44:24 AM PDT by gleeaikin
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To: gleeaikin

Thanks gleeaikin. I’m opening some windows about that, and may do a web search as well. :’)


34 posted on 08/26/2011 3:09:31 PM PDT by SunkenCiv (It's never a bad time to FReep this link -- https://secure.freerepublic.com/donate/)
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