Astronomical Adventures

The Planet Earth

Planet Earth

Earth as seen by the Galileo spacecraft

Some basic facts about Earth

Radius (kilometers)6378
Orbital Distance from the Sun (kilometers)149597870
Rotation Period (1=24 hours)0.99725
Mass (Million Metric Tons)5.974E+12
Density (grams/cubic centimeter)5.52
Year DiscoveredUnknown

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