Liquid water on Mars and what this means

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As Science Alert reports, researchers have long puzzled over the mysterious source of dust on the Red Planet, with Johns Hopkins University planetary scientist Lujendra Ojha asking, "How does Mars make so much dust, because none of these processes are active on Mars?" Marsis radar results above.

The close approach is also exciting, Boyle said, because of humankind's obsession with the red planet. "We'll still need to drill, still need suction, and given the temperatures on Mars, any exposed liquid water would freeze, so there still needs to be a way to turn ice into water", Padir said. That lead scientists to believe that there was, at one point, the possibility of life.

This year that happens on July 31, just a few days past opposition. Or so we thought.

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"We interpret this feature as a stable body of liquid water on Mars". There are no alien rowboats floating around under a warm red sky.

Their finding is based on data from the European Mars Express spacecraft, obtained by a radar instrument called MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding).

The lead writer of the study, Roberto Orosei si and astrophysicist at National Institute of Astrophysics in Bologna and he cannot control his excitement.

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While Mars will be overhead for people in central Chile, South African and Australia, it will be low in the southern sky for those watching in the USA and Europe. They can not see the bottom with existing equipment, but they estimate it is at least 3 feet deep, otherwise they would not have detected it at all. MARSIS sends electromagnetic pulses down to the planet and measures how they echo back - and Orosei and colleagues discovered especially bright reflections from a broad region spanning about 12 miles, about a mile below the ice.

"So if you go outside and it's a clear night, you should be able to see roughly one shooting star a minute", said Mackay. They collected Radar profiles between May 2012 and December 2015 and found evidence of liquid water trapped below the ice of the South Polar Layered Deposits.

"While the discovery is a major one for researchers hoping to find life on Mars, no one's getting their hopes up-but they are tentatively preparing themselves for a real alien discovery in Mars" subsurface. Global dust storms - lasting for weeks or months - tend to happen during the spring and summer in the southern hemisphere, when Mars is closest to the Sun and heating is at a maximum to generate winds.

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