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NASA’s Mars Curiosity Rover has detected rising and falling oxygen levels on Mars that appear to fluctuate seasonally, Yahoo News reports. What that means, if indeed it means anything, remains to be seen.
For decades, the space-exploration community has been sending spacecraft to the Red Planet to try to suss out its mysteries. And at this stage of the game, the craft that are both on the surface and orbiting it are looking for one thing: evidence of life, whether currently living or long dead and fossilized. It’s not the only thing they’re looking for, but it’s certainly one of the main things they’re trying to find.