One who studies heavenly bodies
A.
B.
C.
D.
Answer & Solution
Solution:
Astronomer
is someone who studies celestial bodies such as stars, planets, and galaxies.
Constellation
(A) is a group of stars, not a person.
Ornithology
(B) is the study of birds, not heavenly bodies.
Geology (C) is the study of the Earth's structure and substances,
not the stars.
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