Apparent motion of stars: East-to-west drift explained. Why do stars seem to move from east to west across the sky to an observer on Earth? Choose the correct option.
IIT JEE
Physics
Difficulty: Easy
Choose an option
-
ABecause Earth rotates from west to east
-
BBecause stars orbit Earth once per day
-
CDue to Earth's revolution around the Sun
-
DDue to atmospheric refraction
Answer
Correct Answer: Because Earth rotates from west to east
Explanation
Concept
- Earth's rotation is west → east; this makes the celestial sphere appear to move east → west.
Final AnswerBecause Earth rotates from west to east