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.

Moon: Moon

View on Maps: google.com/maps/space/earth

Radius: 3,959 mi

Age: 4.543 billion years

Population: 7,714,576,923 (2019)

Did you know: Earth's weight is 5.972 sextillion (1,000 trillion) metric tons, and it is actually gaining weight.