Earth is the third planet from the Sun and the only astronomical object known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4.5 billion years ago. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, Earth's only natural satellite.
Population: 7.53 billion (2017) Trending, World Bank.
View on Maps: google.com/maps/space/earth Radius: 6,371 km Age: 4.543 billion years Distance from Sun: 149.6 million km Did you know: In Norse mythology, the Earth giantess Jörð was the mother of Thor and the daughter of Annar.
Earth
The third planet from the sun, Earth is a waterworld, with two-thirds of the planet covered by ocean. It’s the only world known to harbor life. Earth’s atmosphere is rich in life-sustaining nitrogen and oxygen. Earth's surface rotates about its axis at 1,532 feet per second (467 meters per second) — slightly more than 1,000 mph (1,600 kph) — at the equator. The planet zips around the sun at more than 18 miles per second (29 km per second).
Diameter: 7,926 miles (12,760 km) Orbit: 365.24 days Day: 23 hours, 56 minutes Related: More Earth Information 50 Amazing Facts about Earth Earth Pictures NASA Solar System Exploration: Earth Mars researchers are focusing both Earth-based and planet orbiting sensors to better understand sources of methane on the red planet. Mars researchers are focusing both Earth-based and planet orbiting sensors to better understand sources of methane on the red planet. Credit: Space Telescope Science Institute
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