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why are their dark spots on the moon?

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  • Gabe
    Lv 6
    1 year ago

    Those are lava fields, the lava came from (occasional) volcanoes, (mostly) especially strong asteroid impacts, either flowing out directly or pooling into preexisting low areas (would need to drill to find out which).

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  • Anonymous
    1 year ago

    Lava freckles.

    Various causes, from meteor strikes to leftovers from the original forming of the moon.

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  • 1 year ago

    They are Marianna (Plural)

    Formed by ancient Lava flows on the Lunar surface

    They cooled to form expansive flat areas

    Made of Basalt they are dark gray in colour

    Ancient Astronomers considered them as Seas and Oceans

    Hence Mare Tranquiliterus, (Sea of Tranquility )

    Attachment image
    Source(s): Houston, Tranquility Base here, the Eagle has landed !
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  • 1 year ago

    Lava fields spreading out from ancient volcanic eruptions after the meteor impacts causing the craters had stopped.

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  • Vaman
    Lv 7
    1 year ago

    Sun light does not reach those places. There is no atmosphere to scatter the light into those regions. This makes them very dark

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  • 1 year ago

    The dark spots have a different chemical composition is why. Iron and magnesium minerals predominate in basalts. Silicon and aluminum minerals predominate in the light areas.

    Source(s): Geology of the Moon Wikipedia article. B.S. and M.S. in geology, B.S. in physical geography
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  • Tom S
    Lv 7
    1 year ago

    Those were lava flows a long time ago, in the "low lands" the rougher mountainous "highland" areas are a bit brighter by contrast.

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  • 1 year ago

    They are craters that have since filled with lava (lava is relatively dark material).

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  • Anonymous
    1 year ago

    The moon is flat, that's why.

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  • Nyx
    Lv 7
    1 year ago

    Those are the lunar "seas" vast plains of lava flows that percolated up from the Moon's mantle after huge asteroid impacts billions of years ago.

    https://curator.jsc.nasa.gov/lunar/letss/mare3.pdf

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