NASA has released new data showing the first glimpses of the TRAPPIST-1 dwarf star system which contains three Earth-sized planets. The space agency revealed last month that seven exoplanets orbit TRAPPIST-1. The discovery is seen as particularly significant because three of the exoplanets (TRAPPIST-1b, c, and d) are all within the star's habitable zone, meaning that they could likely contain life-supporting liquid water. The star is defined as an "ultra-cool dwarf," meaning it is much cooler and smaller than our sun. Between December 15 and March 4, the Kepler spacecraft observed TRAPPIST-1 for 74 days. NASA has released a clip comprising 60 photos of the planetary system that Kepler snapped every minute for one hour on February 22. NASA explained that the images cover an area of 11 square pixels, or 44 square arcseconds, of the sky – an area the space agency says is equivalent to what would be covered by a grain