Earth
The only home we have ever known.
Liquid water, a protective atmosphere, and a living surface make Earth a remarkable place. Its tilted axis gives us seasons as we travel around the Sun.
Explore this orbit ↗
Image: NASA / Apollo 17 crew. Processed mission imagery; apparent color varies with filters and processing.
Earth compared with Earth
Its equatorial diameter is 1.00 times Earth’s. Its mass is 1.00 times Earth’s, while its orbital period is 1.00 Earth years.
The reference gravity is about 9.8 m/s². These rounded values include the reference conventions used in NASA’s fact sheet; the ideal spherical gravity calculator can differ slightly.
A few good questions
How far is Earth from the Sun?
Earth has a mean orbital distance of about 149.6 million kilometers, or 1.00 AU. Its actual distance varies through its elliptical orbit.
How long is a year on Earth?
An orbit takes approximately 365.2 Earth days. The orbit simulator lets you see how distance affects the length of a year.