Cepheid Variable Star in Galaxy M100

This Hubble Space Telescope image of a region in the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies.


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

About the Image

NASA press release
NASA caption
Release date:26 October 1994, 19:00
Size:700 x 600 px

About the Object

Name:Messier 100, NGC 4321
Type:• Local Universe : Star : Type : Variable
• Local Universe : Galaxy : Type : Spiral
Distance:50 million light years

Image Formats

Large JPEG
82.1 KB
Screensize JPEG
176.2 KB

Colours & filters

Optical Hubble Space Telescope

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