APOD: A year in the life of a terminator
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Earth's terminator, to be exact, and not so much a picture as a movie: Equinox on a Spinning Earth[^] is a short (15 second) movie taken from a year's worth of satellite images aligned so the planet looks immobile. This gives a view of how the terminator -- the boundary between night and day -- moves from one autumn equinox to the next. And just in time for the spring equinox tomorrow! (Or today, depending on where you are on the planet.) (Corrected information.) (Corrected the correction.)
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Earth's terminator, to be exact, and not so much a picture as a movie: Equinox on a Spinning Earth[^] is a short (15 second) movie taken from a year's worth of satellite images aligned so the planet looks immobile. This gives a view of how the terminator -- the boundary between night and day -- moves from one autumn equinox to the next. And just in time for the spring equinox tomorrow! (Or today, depending on where you are on the planet.) (Corrected information.) (Corrected the correction.)
Fun movie! :-D
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Earth's terminator, to be exact, and not so much a picture as a movie: Equinox on a Spinning Earth[^] is a short (15 second) movie taken from a year's worth of satellite images aligned so the planet looks immobile. This gives a view of how the terminator -- the boundary between night and day -- moves from one autumn equinox to the next. And just in time for the spring equinox tomorrow! (Or today, depending on where you are on the planet.) (Corrected information.) (Corrected the correction.)
Should the terminator go horizontal, then termination will have been completed.