Logo

Astronomy Image of the Day

Starburst Galaxy IC 10

04 January 2012

Dietmar Hager

NASA Astronomy Image of the Day for 04 January 2012

Lurking behind dust and stars near the plane of our Milky Way Galaxy, IC 10 is a mere 2.3 million light-years distant. Even though its light is dimmed by intervening dust, the irregular dwarf galaxy still shows off vigorous star-forming regions that shine with a telltale reddish glow in this colorful skyscape. In fact, also a member of the Local Group of galaxies, IC 10 is the closest known starburst galaxy. Compared to other Local Group galaxies, IC 10 has a large population of newly formed stars that are massive and intrinsically very bright, including a luminous X-ray binary star system thought to contain a black hole. Located within the boundaries of the northern constellation Cassiopeia, IC 10 is about 5,000 light-years across. Best Short Astronomy Videos: APOD editor to speak in New York City on Friday, January 6

Image and explanation courtesy of NASA Astronomy Picture of the Day