#Hubble delivers first insight into the atmospheres of four Earth-sized, potentially habitable planets orbiting the ultracool dwarf star #TRAPPIST1 ➡️ https://t.co/wz0bwETOr9#space #science #exoplanets pic.twitter.com/NUxOSaH4YM

— ESA Science (@esascience) February 5, 2018