Cepheid Variable Star in Galaxy M100

The interval it takes for the Cepheid to complete one pulsation is a direct indication of the stars's intrinsic brightness. This value can be used to make a precise measurement of the galaxy's distance, which turns out to be 56 million light-years from Earth. This image was taken on May 16, 1994.


Dr. Wendy L. Freedman, Observatories of the Carnegie Institution of Washington, and NASA/ESA

About the Image

NASA press release
Release date:26 October 1994, 19:00
Size:240 x 240 px

About the Object

Name:Messier 100
Type:• Local Universe : Star : Type : Variable
• Local Universe : Galaxy : Type : Spiral
Distance:50 million light years

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23.6 KB
Screensize JPEG
101.8 KB

Colours & filters

Optical Hubble Space Telescope

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