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Tracks left by Spirit -- Image courtesy of NASA
Findings collected by the Mars rover Spirit gets scientists excited for what other secrets the Red Planet may hide

Scientists have conducted a lot of research to discover signs of water and possible life on Mars.  A recent discovery by a NASA rover has created excitement in the scientific community: the Mars rover Spirit collected soil samples that makes scientists strongly believe Mars was once wet. 

The rover found some Martian soil with high levels of silica, which needs water to crystalize.  Basic chemical analysis on the soil revealed the soil composition contained up to 90 percent silica.  This soil, located in Gusev Crater, is the strongest evidence that water, at some point in the planet's history, existed.

Scientists are unsure how the silica deposit in the crater originally formed.  The most likely theory is that soil mixed with acid vapors, created by volcanic activity, along with a strong presence of water.  Another popular idea is that the silica was created from water from a hot spring.

Spirit's discovery "reinforces the fact that significant amounts of water were present in Mars' past, which continues to spur the hope that we can show that Mars was once habitable and possibly supported life," said Doug McCuistion, NASA Mars exploration program director.

Oddly enough, the silica discovery happened due to a Spirit mechanical problem.  The bright patches of silica-rich soil were discovered when one of the rover's wheels dragged through the topsoil, revealing the bright colored silica-soil underneath.

Scientists are anxious to continue their research to discover what else is on the Red Planet.  Research indicates ice under the Martian surface varies in depth from location to location.
Late last year, NASA researchers used the Mars Global Surveyor to discover water flowed recently on the Red Planet.


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RE: lol
By dsumanik on 5/22/2007 1:53:34 PM , Rating: 2
I tihnk its great we are sending interplanetary probes out there...even if it is just to discover what may be somewhat obvious.

To much of science is based on educated guesses, mathmatecial proofs and estimations.....try asking your university astrophysics professor a question..the answer will always start with:

"we think" or "they say"

Hard physical evidence is irrefutable, and quite frankly im glad they are sending mars probes out there first to try and find water....if they can find a viable source your dream of colonization and interplanetary travel just got about a zillion times cheaper and more likely.

I wouldn't launch any major space exploration without sending some cheap probes out there first to poke around?

Man dont you watch star trek or star wars they always sendin probes out first...and let me tell you picard/vader knows whats up

peace out homeslice, and keep yo pimp walk fly....


RE: lol
By P4blo on 5/22/2007 2:55:34 PM , Rating: 1
>Hard physical evidence is irrefutable, and quite frankly >im glad they are sending mars probes out there first to >try and find water....if they can find a viable source >your dream of colonization and interplanetary travel just >got about a zillion times cheaper and more likely.

Yep, I was being a tad dismissive but finding water is clearly very important. How else am I going to cool my rig if I move out there?

>Man dont you watch star trek or star wars they always >sendin probes out first...and let me tell you picard/vader >knows whats up

Not enough obviously, hey I thought they always sent the single most important person down (the captain) when a new and potentially deadly world was discovered. Must have worked as Cap'n Kirk never got the bad news. Picard on the other hand was a lazy git he just got his space minions to 'make it so'.

>peace out homeslice, and keep yo pimp walk fly....

LOL


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