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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaSpace object

The Moon's changing phases · explain why its apparent illuminated shape changes through the month

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ScienceOne small aha
Your new ahaAs the Moon orbits Earth, we see different fractions of its sunlit half.

Most of the solar system's mass is concentrated in the Sun. Source: Solar System ↗

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More from Solar System & Beyond

A few more worth knowing.

  1. 06Solar eclipse · relative positions of the Sun, Earth and MoonRECALL
    The Moon passes between Earth and the Sun

    Its shadow falls on Earth

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  2. 07Lunar eclipse · relative positions of the Sun, Earth and MoonRECALL
    Earth passes between the Sun and the Moon

    Earth's shadow falls on the Moon

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  3. 08This synchronized rotation and orbit keeps the same side of the Moon facing Earth.RECALL
    Tidal locking

    Its rotation and orbit have matching periods

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