Experts harnessed machine learning technology from Google to spot Kepler-90i, a hot, rocky planet circling Kepler-90, a Sun-like star 2,545 light years from Earth. A light year, which measures distance in space, equals 6 trillion miles. The surface of Kepler-90i is 800 degrees Fahrenheit, making it unlikely that life as we know it could exist there, according to NASA. By using AI, computers learned to identify planets by trawling Kepler data for instances where the telescope recorded signals from exoplanets far beyond our solar system.