NASA @NASA
Comets have auroras too! ☄ Our instruments aboard the @ESA_Rosetta spacecraft have helped reveal that a comet has its own far-ultraviolet aurora. About this first-ever finding on a celestial object other than a planet or moon: https://t.co/BAwlgGD16A https://t.co/34llumwE7t — PolitiTweet.org