NASA Discovery Reveals Largest Group of Earth-Size Planets In Habitable Zone

A team of astronomers using NASA’s Spitzer Space Telescope, an orbiting platform that observes the universe exclusively in the InfraRed (heat) region of the spectrum, have discovered a group of Earth-size planets in orbit around the cool, low-mass red dwarf star TRAPPIST-1, three of which are within the star’s habitable zone! As mentioned in yesterday’s[…]