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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaSpace object

This attractive force keeps planets in orbit around the Sun.

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ScienceOne small aha
Your new ahaGravity

Gravity acts between objects with mass, including objects much smaller than planets. Source: Gravity ↗

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More from Solar System & Beyond

A few more worth knowing.

  1. 47This distance unit is based on the Earth–Sun separation and is defined as exactly 149,597,870,700 metres.RECALL
    Astronomical unit

    One AU is about 150 million kilometres

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  2. 48This term names a planet orbiting a star other than the Sun.RECALL
    Exoplanet

    Thousands have been confirmed

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  3. 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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