Discover the planets, moons, and celestial bodies in our cosmic
neighborhood
Earth
Earth is the third planet from the Sun and the only
astronomical object known to harbor life. About 29% of
Earth's surface is land consisting of continents and
islands. The remaining 71% is covered with water, mostly by
oceans, seas, gulfs, and other salt-water bodies, but also
by lakes, rivers, and other fresh water, which together
constitute the hydrosphere.