Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
February 21, 1996
Millions of Stars in Omega Centauri
Credit: P. Seitzer
(U. Michigan)
Explanation: Pictured above is the largest ball of stars in our Galaxy. About 10 million stars orbit the centre of this globular cluster - named Omega Centauri - as this giant globular cluster orbits the centre of our Galaxy. Recent evidence indicates that Omega Centauri is by far the most massive of the about 160 globular clusters in the Milky Way. The stars in globular clusters are generally older, redder and less massive than our Sun. Studying globular clusters tells us about the history of our Galaxy and the age of the universe.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry
Bonnell (USRA)
NASA Technical Rep.:
Jay Norris.
Specific rights apply.
A service of:
LHEA
at
NASA/
GSFC
&:
Michigan Tech. U.