Ahhhh, the sweet smell of life. The Philae lander has sniffed out organic matter on Comet 67P. Carbon-rich organic molecules are the basis of life, so the discovery may provide compelling evidence that comets were the source of vital chemical ingredients that helped living organisms evolve on Earth. But the lander’s batteries need more than comet-based nutrients to live. For scientists to glean more results, they’ll need to wait for the comet to pass the sun so Philae’s solar panels can recharge.