Cepheid Variable Star in Galaxy M100
Depicts: Cepheid Variable Star
Copyright: Dr. Wendy L. Freedman, Observatories of the Carnegie Institution of Washington, and NASA
This sequence of images taken with the Hubble Space Telescope chronicles the rhythmic changes in a rare class of variable star (located in the center of each image) in the spiral galaxy M100. This class of pulsating star is called a Cepheid Variable. The Cepheid in this Hubble
picture doubles in brightness (24.5 to 25.3 apparent magnitude) over a period of 51.3 days.
Last Update: 1 September 2019