Detail View: NASA Image of the Day Gallery: Star Maker

Title: 
Star Maker
Creator: 
NASA
Description: 
Galaxies throughout the universe are ablaze with star birth. But for a nearby, small spiral galaxy, the star-making party is almost over. Astronomers were surprised to find that star-formation activities in the outer regions of NGC 2976 have been virtually asleep because they shut down millions of years ago. The celebration is confined to a few die-hard partygoers huddled in the galaxy’s inner region. The explanation, astronomers say, is that a raucous interaction with M81, a neighboring group of hefty galaxies, ignited star birth in NGC 2976. Now the star-making fun is beginning to end. Images from NASA’s Hubble Space Telescope show that star formation in the galaxy began fizzling out in its outskirts about 500 million years ago as some of the gas was stripped away and the rest collapsed toward the center. With no gas left to fuel the party, more and more regions of the galaxy are taking a much-needed nap. The star-making region is now confined to about 5,000 light-years around the core. Image Credit: NASA, ESA, and J. Dalcanton and B. Williams (University of Washington, Seattle)
Date: 
01/15/10
Identifier: 
417323main_star-making-full_full.jpg
MediaType: 
Image
MediaType: 
image
Collection: 
NASA_Multimedia_IMAGEGALLERY
Year: 
2010
What: 
Hubble Space Telescope (HST)
Where: 
NGC 2976
Where: 
M81
Where: 
Washington