Take a trip 40 light-years away to one of the seven Earth-sized planets in the TRAPPIST-1 system.
Download poster: https://t.co/t8N2ZsMXWV pic.twitter.com/CMiNUSGppi
— NASA (@NASA) February 23, 2017
"This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life," said Thomas Zurbuchen of NASA. "Answering the question 'are we alone' is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal."