开勒普-90的行星系统
2020 April 28 The Kepler-90 Planetary System Illustration Credit: NASA Ames, Wendy Stenzel Explanation: Do other stars have planetary systems like our own? Yes — one such system is Kepler-90. Cataloged by the Kepler satellite that operated from Earth orbit between 2009 and 2018, eight planets were discovered, giving Kepler-90 the same number of known p...