Science News: Nasa scientists compare Quisquiro salt flat to Gale Crater on Mars, exploring methane presence. Similarities suggest Mars had saline environments. Cur
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NASA's Mars Curiosity rover has made a puzzling discovery while roaming the barren surface of the planet's Gale Crater: puffs of methane gas that only appear at night and vanish during the day. The rover's Sample Analysis at Mars (SAM) instrument detected spikes of the gas, sometimes spiking to 40 times the usual levels […]