NGC 457 [SEP] constellation
NGC 457
NGC 457 (also known as the Owl Cluster, the ET Cluster, or Caldwell 13) is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787, and lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years. The cluster is sometimes referred by amateur astronomers as the "Owl Cluster", "Kachina Doll Cluster", the "ET Cluster" (due to its resemblance to the movie character) or the "
Owl (disambiguation)
Owls are nocturnal birds of prey.
Owl, Owls or OWL may also refer to:
Places.
- On Earth
- Owl, Arizona, United States, an unincorporated community
- Owl Creek (Colorado), United States
- Owl Mountains, Poland
- Owl Nebula, in the constellation Ursa Major
- Owl Peak (Wyoming), United States
- Owl River (Manitoba), Canada
- In space
- NGC 457, an open star cluster