Facts about Pleiades Star Cluster
- 08
Approximately 14 percent of Pleiades stars are spectroscopic binaries where two stars orbit each other too closely to be resolved individually by telescope.
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Ancient star charts from around 1000 BCE first documented the Pleiades cluster, making it one of the earliest recorded astronomical observations in human history.
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Infrared imaging reveals that the Pleiades cluster contains a reflection nebula of cool dust that scatters starlight, making it visible from Earth despite being composed of non-luminous material.
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Blue-white giant stars dominate the Pleiades cluster because its young age of 100 million years has not allowed massive stars to evolve into red giants.
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Proper motion measurements show the Pleiades cluster is moving through space at approximately 20 kilometers per second relative to our solar system.
- 03
Observations by the Spitzer Space Telescope revealed that approximately 25 percent of stars in the Pleiades cluster are surrounded by warm dust disks potentially forming planetary systems.
- 02
The seven brightest stars in the Pleiades cluster are named after the seven sisters in Greek mythology: Alcyone, Atlas, Electra, Maia, Merope, Pleione, and Taygeta.
- 01
At approximately 100 million years old, the Pleiades star cluster contains over 1,000 stars and lies 444 light-years from Earth in the constellation Taurus.