Alice Instrument's Ultraviolet Close-up Provides A Surprising Discovery About Comet 67P/Churyumov-Gerasimenko's Atmosphere
Monday, June 8, 2015 - 18:40
in Astronomy & Space
A close-up of Comet 67P/Churyumov-Gerasimenko by NASA's ultraviolet instrument surprised scientists by revealing that electrons close to the comet's surface -- not photons from the Sun as had been believed -- cause the rapid breakup of water and carbon dioxide molecules spewing from the surface. read more