Q. Which is the closest star to Earth

A
Sirius
B
Sun
C
Rigel
D
Deneb
Solution:

Sun is the closest star to Earth.
Sirus is a binary star and the brightest star in the night sky.
Rigel is is on average the seventh-brightest star in the night sky and the brightest in the constellation of Orion.
Deneb is the brightest star in the constellation of Cygnus, the swan.

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