Astrophysics. Animation of a Cepheid variable star varying in brightness in the arm of a spiral galaxy. - HD stock video

A Cepheid is a star that varies in light intensity over regular, measurable periods. The period of pulsation is directly related to a Cepheid's intrinsic brightness making observations of these stars useful for determining distance. Credit NASA
A Cepheid is a star that varies in light intensity over regular, measurable periods. The period of pulsation is directly related to a Cepheid's intrinsic brightness making observations of these stars useful for determining distance. Credit NASA
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Credit:
NASA
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137099027
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Oxford Scientific Video
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00:01:12:00
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