NGC 7318 [SEP] constellation
NGC 7318
NGC 7318 (also known as UGC 12099/UGC 12100 or HCG 92d/b) are a pair of colliding galaxies about 300 million light-years from Earth. They appear in the Constellation Pegasus and are members of the Stephan's Quintet.
The Spitzer Space Telescope revealed the presence of a huge intergalactic shock wave, shown by a green arc produced by one galaxy falling into another at millions of kilometers per hour. As NGC 7318B collides with NGC 7318A, gas spread throughout the cluster, atoms of
merger history tree approach.
Examples.
Some of the galaxies that are in the process of merging or are believed to have formed by merging are:
- Antennae Galaxies
- Mice Galaxies
- Centaurus A
- NGC 7318
See also.
- Andromeda–Milky Way collision
- Bulge (astronomy)
- Galaxy formation and evolution
- Interacting galaxy
- Mass deficit
- Pea galaxy
External links.
- Andromeda involved in galactic collision – NBC News
- "GALMER: