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Rareastronomical unit
The correct spelling is astronomical unit.
How to pronounce astronomical unit
noun
Say it like: Ast-ron-omi-cal- un-it
The correct spelling is astronomical unit. 149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.
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Definition
noun
- 1.149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.
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