unusual, beaded, blue, ring-like galaxy which just happens to line-up behind a giant cluster of galaxies. Cluster galaxies here typically appear yellow and -- together with the cluster's dark matter -- act as a gravitational lens. A gravitational lens can create several images of background galaxies, analogous to the many points of light one would see while looking through a wine glass at a distant street light. The distinctive shape of this background galaxy -- which is probably just forming -- has allowed astronomers to deduce that it has separate images at 4, 10, 11, and 12 o'clock, from the center of the cluster. A blue smudge near the cluster center is likely another image of the same background galaxy. In all, a recent analysis postulated that at least 33 images of 11 separate background galaxies are discernable. This spectacular photo of galaxy cluster CL0024+1654 from the Hubble Space Telescope was taken in November 2004.
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture Of the Day
Publications with keywords: galaxy cluster - gravitational lens
Publications with words: galaxy cluster - gravitational lens
- APOD: 2023 January 18 Á MACS0647: Gravitational Lensing of the Early Universe by Webb
- Webb s First Deep Field
- A Molten Galaxy Einstein Ring Galaxy
- Gravity s Grin
- SN Requiem: A Supernova Seen Three Times So Far
- Abell 3827: Cannibal Cluster Gravitational Lens
- Sonified: The Matter of the Bullet Cluster