Asteroids are incredible sources of information about the history of our solar system. Planetary geologist and National Geographic Explorer Bethany Ehlmann studies 画像 of Ceres, the largest asteroid in the ベルト between Mars and Jupiter.
Earth is the only planet known to maintain life. Find out the origins of our ホーム planet and some of the key ingredients that help make this blue speck in 宇宙 a unique global ecosystem.
