Biggest evidence of liquid water found on Mars
The view that water once existed on the surface of Mars is getting strengthened. There have been more than enough evidences that the Red Planet once contained more than enough water to sustain life. It is altogether a different thing that we havenâ€™t got a trace of water there despite all the rovers and spacecrafts that NASA and other nations have sent to the Mars.
Latest data shared by the Nasa Curiosity rover suggest that there may be water well inside the Mars surface. There are indications that liquid brine may be present in large quantity under the surface of the Red Planet.
It is no denying the fact that if there is one planet that has kept people on earth excited about is Mars. Every time that hear reports of presence of water on the Red Planet, it futher strengthens the resolve of Mars colonists to try to land there as soon as possible.
While talking about the latest development Prof. Morten Madsen of the Niels Bohr Institute at the University of Copenhagen says, â€œWe have discovered the substance calcium perchlorate in the soil and, under the right conditions, it absorbs water vapour from the atmosphereâ€¦Our measurements from the Curiosity roverâ€™s weather monitoring station show that these conditions exist at night and just after sunrise in the winter. Based on measurements of humidity and temperature at a height of 1.6 metres and at the surface of the planet, we can estimate the amount of water that is absorbedâ€.
While further detailing the latest update in this regard he goes on to add, â€œWhen night falls, some of the water vapour in the atmosphere condenses on the planet surface as frost, but calcium perchlorate is very absorbent and it forms a brine with the water, so the freezing point is lowered and the frost can turn into a liquidâ€¦The soil is porous, so what we are seeing is that the water seeps down through the soil. Over time, other salts may also dissolve in the soil and now that they are liquid, they can move and precipitate elsewhere under the surface,â€ he said.