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GS Geography Physical Geography of World
Q.

Which of the following does not belong to the solar system?
Explanation:

ANS. (D) 
A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a name for any extended astronomical object, including galaxies beyond the Milky Way. The Andromeda Galaxy, for instance, was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble.
 

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