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