Why do the planets "drift" east relative to the stars and then move west for periods of time?
A) They don't move, they stay fixed relative to the stars.
B) They are moving in large elliptical orbits, so when observed from Earth, their motion changes depending on whether they are near or far from the Sun at a given time.
C) They are moving in the same rotation sense as the earth around the Sun, but as the earth moves faster or slower, depending on the planet. the motion appears to be backwards.
D) They are moving in separate orbits around the Sun as it goes around the earth, producing the periodic backtracking.
Correct Answer:
Verified
Q1: This scientist was the first to use
Q2: How did Eratosthenes estimate the size of
Q4: The true shape of the planetary orbits
Q5: According to the Ptolemaic Greek. model of
Q6: Galileo observed several features using the telescope.
Q7: What is the modern explanation for "guest
Q8: Planets appear to move_ each night, but
Q9: Three laws of planetary motion were discovered
Q10: The apparent westward "drift" of the planets
Q11: The earliest astronomical records appear to have
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents