V1 is a Special Class of Pulsating Star (IMAGE)

NASA/Goddard Space Flight Center

V1 is a Special Class of Pulsating Star

Caption

NASA's Hubble Space Telescope has been trained on a single variable star that in 1923 altered the course of modern astronomy. V1 is a special class of pulsating star called a Cepheid variable that can be used to make reliable measurements of large cosmic distances.

Credit

NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

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