The red dwarf star TRAPPIST-1, which sits in the constellation of Aquarius and barely the size of Jupiter, was thought a year ago to have three planets in orbit around it. This initial discovery caused scientists to keep a close eye on the star. But now a study published in the science journal Nature has exposed a wealth of worlds which are generally thought of as being rare. NASA has just made the incredible announcement: Seven Earth-sized exoplanets around the one star. All are thought to be mostly made up of rock and could potentially support liquid water on their surfaces.

Around a nearby, cold, small star we found 7 rocky Earth-size planets, all of which could have liquid water – key to life as we know it. pic.twitter.com/C2JWjDfBdK

— NASA (@NASA) February 22, 2017