TRAPPIST-1e
TRAPPIST-1e, also known as 2MASS J23062928-0502285 e, is a rocky, almost earth-size exoplanet orbiting within the habitable zone around the ultracool dwarf star TRAPPIST-1 about  away from Earth in the constellation of Aquarius. Astronomers found the exoplanet by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured.