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Earth
Earth-planet
Description
Adjectives: Tellurian
Distance from Sun: 149.6 million km
Diameter: 12,742 km
Radius: 6,371 km
Temperature: 331 K to 183 K
Known Moons 1

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.