Water found on Mars â€“ NASA
The historic findings by scientists from NASA and several US universities are based on research on dark, narrow and elongated streaks that appear on the surface of the Red Planet and which are known as â€œrecurring slope lineaeâ€ (RSL).
Research shows the streaks â€œappear and grow incrementally in the downslope direction during warm seasonsâ€.
NASA scientists suggest the streaks were formed as a result of salty â€œflowsâ€ or â€œseepsâ€ because they bear a striking resemblance to the shapes and curves that water on Earth makes as it flows along the surface of the ground.
The theory that water exists on Mars was first proposed by scientist Lujendra Ojha, who as an undergraduate student at the University of Arizona in 2011, studied dark, finger-shaped images on Mars.
Ojah, now a PhD candidate at the Georgia Institute of Technology and the lead author of the study, told Al Jazeera that â€œwater does exist on Mars.â€
Ojah added that chemical signatures of water were found in the crystals of salt samples.
â€œWe found evidence of water activity in hydrated salts on Mars,â€ he said.
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