Mars: Nasa images show signs of flowing water

[spf1007]

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.

They emerge between rocky outcrops and flow hundreds of metres down steep slopes towards the plains below.

They appear on hillsides warmed by the summer sun, flow around obstacles and sometimes split or merge, but when winter returns, the tendrils fade away.

This suggests that they are made of thawing mud, say the researchers.

"It's hard to imagine they are formed by anything other than fluid seeping down slopes," said Mars Reconnaissance Orbiter Project Scientist Richard Zurek of Nasa's Jet Propulsion Laboratory, but they appear when it's still too cold for fresh water.

Salty water
"The best explanation we have for these observations so far is flow of briny water, although this study does not prove that," said planetary geologist and lead author Professor Alfred McEwen of the Lunar and Planetary Laboratory, University of Arizona.

Saltiness lowers the temperature at which water freezes, and water about as salty as Earth's oceans could exist at these sites in summer.

"This could be the first flowing water," said Professor McEwen. This has profound implications in the search for extraterrestrial life.

"Liquid water is absolutely essential for life, and we've found life on Earth in pretty much every moist niche," said Dr Lewis Dartnell, astrobiologist at University College London, who was not involved in the study.

"So perhaps there could be hardy microbes surviving in these short periods of summer meltwater on the desert surface of Mars."

This was echoed by an expert on life in extreme environments, Professor Shiladitya DasSarma of the University of Maryland, also not involved in this study: "Their results are consistent with the presence of large and extensive underground salty lakes on Mars."

"This is an exciting possibility for those of us studying salt-loving (halophilic) micro-organisms here on Earth, since it opens the possibility that these kinds of hearty bugs may also inhabit our neighbouring planet," he said.

"Halophilic microbes are champions at withstanding the most punishing conditions, complete desiccation and ionising (space) radiation."

For geologist Joe Levy of Portland State University, a specialist in Antarctic desert ecosystems, who did not contribute to this work, they represent "a truly tantalising astrobiological target".

These small and mysterious tendrils could then be the best place to look for Martian life. Professor McEwen says that "for present-day life, these are the most accessible sites".

U can watch the video on this Link: Mars: Nasa images show signs of flowing water

 

[Nothxkbi]

What if it's a life form...some living liquid goo?!

But seriously, great find this. We've got to get a probe near these objects and see what's going on down there.

 

[mfumbesi]

If we find life on Mars, that would be exciting but, it would put a stop in any future explorations of Mars (contamination and all).

 

[Ninja'd]

If we find life on Mars, that would be exciting but, it would put a stop in any future explorations of Mars (contamination and all).

Actually Hollywood taught me we'd colonise the place and suck it dry regardless of the natives.

Total Recall and 3 titted ladies here we come.

 

[pixel_ninja]

If we find life on Mars, that would be exciting but, it would put a stop in any future explorations of Mars (contamination and all).

When has someone left something alone, once they've found that it is there. It's just human nature (curiosity) It's just a question of whether it would be all made public or not.

 

[Voicy]

Global warming is out of control!

 

[porchrat]

When has someone left something alone, once they've found that it is there. It's just human nature (curiosity) It's just a question of whether it would be all made public or not.

It would be made public.

 

[bubbatentoe]

We can't even pipe water to Diepsloot reliably.
The yanks get exited about (possible) water a billion miles away on another (DEAD) planet while they just raised their debt ceiling to avoid going bankrupt.

GOOD PLAN.
Go look for water on Mars.
It'll SURELY solve our problems here on Earth.

TIC.

 

[Elimentals]

We can't even pipe water to Diepsloot reliably.
The yanks get exited about (possible) water a billion miles away on another (DEAD) planet while they just raised their debt ceiling to avoid going bankrupt.

GOOD PLAN.
Go look for water on Mars.
It'll SURELY solve our problems here on Earth.

TIC.

You seem to miss the entire concept. The off-planet search for water is not about getting it as a resource, its more seen as one of the building blocks for life.

If we find water on Mars it immediately increases the chances of finding life on Mars, and I am not talking green men with lasers, even a single cell organism would change our entire world so to speak.

If we find life on Mars it proves that life is more abounded than ever thought possible and that increases the odds that we are not alone. If we find say 2 bodies in this solar system that has life it just doubles the numbers if you use for example the Drake equation. See http://en.wikipedia.org/wiki/Drake_equation

So yes its very big news and worth more than all the money spent on it.

Europa and Io are also contendors for this "second body with life" group