Suggested Searches

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.

See Explanation. Clicking on the picture will download the highest resolution version available.

The Doomed Dust Disk of NGC 7052

Explanation: What created the dust disk in the center of NGC 7052, and what keeps it spinning? Although the disk might appear as a relatively tame “hubcap in space” , the unusual center of elliptical galaxy NGC 7052 is probably the remnant of a titanic collision between galaxies. What's more, the disk's spin indicates the tremendous gravity of a massive central black hole . Analysis of this recently released photo by the Hubble Space Telescope indicates that the disk is thousands of light-year s across, rotates faster than 100 kilometers per second, at a distance of 150 light-years from the center, and contains more mass than a million Suns. The theorized central black hole is thought to be yet 100 times more massive, and may swallow the entire disk in the next few million years.

Date June 22, 1998
Credit Credit: R. P. van der Marel (STScI) et al., WFPC2, HST, NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.