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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaSpace object

This distance unit is based on the Earth–Sun separation and is defined as exactly 149,597,870,700 metres.

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ScienceOne small aha
Your new ahaAstronomical unit

The astronomical unit provides a convenient scale for distances within the Solar System. Source: Astronomical unit ↗

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More from Solar System & Beyond

A few more worth knowing.

  1. 48This term names a planet orbiting a star other than the Sun.RECALL
    Exoplanet

    Thousands have been confirmed

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  2. 49Under the IAU Solar System definition, this body orbits the Sun, is nearly round and has cleared its orbital neighbourhood.RECALL
    Planet

    This is part of the IAU definition

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  3. 50This enormous shield volcano on Mars is the tallest widely recognized volcano in the Solar System.RECALL
    Olympus Mons

    It rises on Mars

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