Quick Read
Earth is the planet where we live. It is nearly spherical, but not a perfect ball.
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Earth's diameter is about twelve thousand seven hundred kilometres. The exact value depends on where and how it is measured.
In Depth
The prototype uses a provisional mean-diameter value. Polar and equatorial diameters differ, so the measurement definition matters.
Scale measurement
12,740 km · diameter
Quick facts
- Category: planet
- Measurement: approximate mean diameter
- Scientific review: pending
Related objects
- contains: Human
- contains: Mount Everest
- orbited-by: Moon
- member-of: Solar System