艾达与艾卫: 小行星和它的卫星
2023年5月28日 Ida and Dactyl: Asteroid and Moon Image Credit: NASA, JPL, Galileo Mission Explanation: This asteroid has a moon. The robot spacecraft Galileo on route to Jupiter in 1993 encountered and photographed two asteroids during its long interplanetary voyage. The second minor planet it photograp […]