Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as ________
A. Cosmic stars
B. Quasars
C. Binaries
D. Novae and supernovae
Answer: Option C
Solution(By Examveda Team)
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.Related Questions on Universe
A. Earth and Jupiter
B. Jupiter and Saturn
C. Saturn and Earth
D. Saturn and Neptune
A. Contracted star with intense gravitational pull
B. Star with very low surface temperature
C. Star with no atmosphere
D. Pulsating star
Messenger satellite has been launched by NASA for the study of
A. Mercury
B. Venus
C. Saturn
D. Jupiter
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