While that comet rondezvous was flashy and all, we’re still doing science on Mars with the Curiosity rover, which has been detecting ‘belches’ of methane in its atmospheric analysis on the surface:
The robot sees very low-level amounts constantly in the background, but it also has monitored a number of short-lived spikes that are 10 times higher.
Methane on the Red Planet is intriguing because here on Earth, 95% of the gas comes from microbial organisms.
Researchers have hung on to the hope that the molecule’s signature at Mars might also indicate a life presence.
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Curiosity scientist Sushil Atreya said it was possible that so-called clathrates were involved.
“These are molecular cages of water-ice in which methane gas is trapped. From time to time, these could be destabilised, perhaps by some mechanical or thermal stress, and the methane gas would be released to find its way up through cracks or fissures in the rock to enter the atmosphere,” the University of Michigan professor told BBC News.
