Solar wind electrons smash water molecules to make the comet’s version of the northern lights Comet 67P/Churyumov-Gerasimenko has its own version of the northern lights. Observations taken by the Rosetta spacecraft reveal the comet’s aurora, which — unlike Earth’s eye-catching light shows — shimmers in invisible ultraviolet light, researchers reportContinue Reading

An international team of astronomers today announced the discovery of a rare molecule — phosphine — in the clouds of Venus. On Earth, this gas is only made industrially or by microbes that thrive in oxygen-free environments. Astronomers have speculated for decades that high clouds on Venus could offer aContinue Reading