Index

Interstellar Clouds
Classes of Objects
Gas Giant Planets
Brown Dwarfs
Red Dwarfs
Sun-sized Stars
Large Stars
The Largest Stars
Impossible Stars
Star Clusters
Planetary Systems
Rocky Planets
An Endless Cycle

The Pleiades, Copyright Anglo Australian Observatory/Royal Edinborough Observatory

The Pleiades star cluster above, also known as The Seven Sisters or Subaru, is easily visible with the naked eye. A telescope shows that there are over 500 dimmer stars in the cluster. The Pleiades stars are spread over an area of sky about four Moon-widths across. The cluster is 400 light years from the Sun. It formed from a single interstellar nebula about 40 million years ago.