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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaSpace object

Moon with a thick nitrogen atmosphere

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ScienceOne small aha
Your new ahaTitan

Titan has a thick atmosphere dominated by nitrogen. Source: Titan (moon) ↗

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More from Solar System & Beyond

A few more worth knowing.

  1. 04This icy Galilean moon, the second outward from Jupiter, is a major target in the search for a subsurface ocean.RECALL
    Europa

    Europa's likely ocean lies beneath an icy crust. Other moons also have subsurface oceans, so that clue alone does not identify it.

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  2. 05The Moon's changing phases · explain why its apparent illuminated shape changes through the monthRECALL
    As the Moon orbits Earth, we see different fractions of its sunlit half.

    Ordinary lunar phases are not caused by Earth's shadow. That shadow is involved in a lunar eclipse.

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  3. 06Solar eclipse · relative positions of the Sun, Earth and MoonRECALL
    The Moon passes between Earth and the Sun

    Its shadow falls on Earth

    Open this card ↗