Variable Stars in Distant Spiral Galaxy
A NASA ESA Hubble Space Telescope (HST) view of the magnificent spiral galaxy NGC 4603, the most distant galaxy in which a special class of pulsating stars called Cepheid variables have been found. It is associated with the Centaurus cluster, one of the most massive assemblages of galaxies in the nearby universe.

Photo By: Jeffrey Newman, NASA, ESA
Photo License: NASA - ESA