If scientists find proof that life once existed on Mars, that could change our conception of life in the universe.
After it drilled two holes in the"Buckskin" rock on Mars, the Curiosity rover took a series of photos that were turned into this panoramic self-portrait. The rover is sitting on the crest of a 20-foot hill.
“If there was life to be detected on Mars, it would be in porous rocks or the underside of rocks,” Torres said. “Somewhere that’s kind of shielded from the harsh environment that is Mars.” “We’re looking for the building-block molecules that make life function, so specifically amino acids,” he said. ”These are the little LEGO blocks that you assemble in the right sequence and you get different proteins and enzymes and the functional components of cells.”Chris Harrison and Jessica Torres are shown in Harrison's San Diego State lab, where they look for ways to examine Martian rocks for life signs.
“It does receive very low rainfall throughout the year,” she said. ”They’ve tested their soil samples and have detected very low levels of fatty acids and other biosignatures in that soil. Which is pretty great since it means their technology would be very suitable for a Mars-like environment.” If scientists find proof that life once existed on Mars, that could change our conception of life in the universe, Meyer said.
“If you have volcanoes, if you have water and you have these elements, given enough time, life will start. It could be that easy. We don’t know,” he said.The human relationship with imagined Martians dates back to the 19th century, when people talked about ways to communicate with Martians. David Brin, a science fiction author and NASA consultant, said Mars is just one of the logical places to look for life.
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