About Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
ccording to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago. Earth’s gravity interacts with other objects in space, especially the Sun and the Moon, which is
Earth’s only natural satellite. Earth orbits around the Sun in about 365.25 days.
Earth’s axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The
gravitational interaction between Earth and the Moon causes tides, stabilizes
Earth’s orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest and most massive of the four rocky planets.
ccording to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago. Earth’s gravity interacts with other objects in space, especially the Sun and the Moon, which is
Earth’s only natural satellite. Earth orbits around the Sun in about 365.25 days.
Earth’s axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The
gravitational interaction between Earth and the Moon causes tides, stabilizes
Earth’s orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest and most massive of the four rocky planets.