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APOD
Astronomy Picture of the Day
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.
Bright Star Regulus near the Leo 1 Dwarf Galaxy
Explanation: The star on the upper left is so bright it is sometimes hard to notice the galaxy on the lower right. Both the star, Regulus , and the galaxy, Leo I , can be found within one degree of each other toward the constellation of Leo. Regulus is part of a multiple star system , with a close companion double star visible to the upper right of the young main sequence star. Leo I is a dwarf spheroidal galaxy in the Local Group of galaxies dominated by our Milky Way Galaxy and M31 . Leo I is thought to be the most distant of the several known small satellite galaxies orbiting our Milky Way Galaxy . Regulus is located about 75 light years away, in contrast to Leo 1 which is located about 800,000 light years away.
| Date | June 19, 2006 |
|---|---|
| Credit | Credit & Copyright: Russell Croman |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |