moon terminator

  1. Mick West

    Explained: Moon Terminator/Shadow UFOs

    The Moon's "terminator" is simply the line between the light and dark areas of the moon, i.e. the line between the sunlit portion of the moon and the shadowed portion. To the naked eye this looks like a smooth line, but if you look closer (with some binoculars, or zoomed in with a camera) you...