Is there life on Mars? The NASA Curiosity Rover has detected the highest methane gas content ever found on the planet and offers the tantalizing possibility of some form of life beneath its surface.
The News: Last Week The Rover had a methane rating of 21 ppm at Gale Crater. It is three times the last record that Curiosity recorded in 2013.
Why It's Exciting: Methane is normally produced by living things and could therefore be a sign of microbial life on the Red Planet. Do not let yourself get carried away. it can also come from stones. "With our current measurements, we can not say if the source of methane is biology or geology, or even old or modern," said Paul Mahaffy of NASA's Goddard Spaceflight Center.
However, if they find out more about the source – and if it is really life, old or current – new instruments must be sent to the surface of the planet. So we have a wait in front of us.
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