Skip to comments.Mars: Nasa images show signs of flowing water
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 ...
All You Need Is Love!
How can 'water' .. 'flow' ?
Whaaaaaaat? Please tell me this question is some kind of joke...
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
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' ?
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.
The epa will have to know if it is clean water.
Neil Armstrong and the guys must have peed when they landed there in the 70s.
The atmospheric pressure on Mars is about 1/1000 that of Earth. Any liquid on the surface would evaporate almost instantly.
Knarf old buddy - you are kidding, right?
remember that is a very salty brine, not pure water. The phase diagram of temp/pressure is shifted.
not really. that’s why the astronauts wear the heavy boots
Heat from a fairly recent impact may have melted some ice, creating a brief flow episode.
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.
It won’t do it as fast as on earth, but the process is the same.
If Obama gets blamed for killing NASA, it will be his greatest achievement. I'm so sick of these phony Tang drinkers.
Mars has gravity, and water (at least in the form of ice). It's just damn cold and with very little atmosphere.
“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.....
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.
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
Note: this topic is from August 4. Thanks Daffynition.
Here is another astronomical story you might want to see or pass on.
Thanks gleeaikin. I’m opening some windows about that, and may do a web search as well. :’)
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