Where did the atmospheric gases and water on Mars go?

A closeup of rocks in Yellowknife Bay on Mars. Image courtesy MSSS/Caltech/NASA

There is evidence to that effect that Mars had both water and a gaseous atmosphere in the past. These hospitable conditions did not continue because of the gravity the planet was too weak to sustain them. On July 31st, 2008 reporters from NASA said “We have water in Mars”. This is the first time water had been detected, a hypotheses that had been long held. However, the water and gaseous atmosphere once found in Mars has disappeared. Current condition reports from Mars describe an environment with low temperatures and pressures. Any liquid water would immediately freeze and sublime. We know from Earth’s history that without water, life cannot exist. These findings of water historically on Mars means that life would be perhaps somewhere hidden on Mars. Think about it,bit by bit, piece by piece we will be a step further to understanding Mars incognita: is there life on Mars?

Meander in Scamander Vallis, as seen by Mariner 9. Such images implied that large amounts of water once flowed on the surface of Mars.

http://news.nationalgeographic.com/news/2013/130115-curiosity-mars-drill-water-space-science/

http://en.wikipedia.org/wiki/Water_on_Mars

Students, Biology Group: Dayana Gonzalez, Teresa Blanco.