mclendenen7385 mclendenen7385

20-07-2022
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What is the difference between an optical double star and a visual binary star

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jaylachance36 jaylachance36

20-07-2022

An optical double is an illusion—the stars are at vast distances from each other and are not actually orbiting each other—whereas in a visual binary, the stars are actually orbiting each other. its total energy output into all space

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