Discussion :: Universe
- Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as ________
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Answer : Option C
Explanation :
In observational astronomy, a double star or visual double is a pair of stars that appear close to each other as viewed from Earth, especially with the aid of optical telescopes. This occurs because the pair either forms a binary star (i.e. a binary system of stars in mutual orbit, gravitationally bound to each other) or is an optical double, a chance line-of-sight alignment of two stars at different distances from the observer.
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