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Hubble image of variable star RS Puppis

Hubble image of variable star RS Puppis

Hubble Space Telescope

This Hubble image shows RS Puppis, a type of variable star known as a Cepheid variable. As variable stars go, Cepheids have comparatively long periods — RS Puppis, for example, varies in brightness by almost a factor of five every 40 or so days.

Credit
NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-Hubble/Europe Collaboration Acknowledgment: H. Bond (STScI and Penn State University)
Licence
CC BY 4.0
Original
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