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double star |
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double star: see binary star binary star or binary system, pair of stars that are held together by their mutual gravitational attraction and revolve about their common center of mass. ..... Click the link for more information. . double star [¦dəb·əl ′stär] (astronomy) A star which appears as a single point of light to the eye but which can be resolved into two points by a telescope. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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144 double stars are listed and mapped in order to provide useful tagets for those nights when deep-sky observation is less than optimum. These rotating double stars beam radio waves -- observed from Earth as flashes -- tens of times a second. |
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