Multiple Choice
Why do the patterns of the stars in our sky look the same from year to year?
A) Because the stars in the constellations are so far away
B) Because the stars in the constellations are not moving
C) Because the stars in the constellations all move at the same speeds and in the same directions, so they don't change their relative positions
D) Because the stars in the constellations move so slowly-typically about the speed of a snail-that their motions are not noticeable
Correct Answer:

Verified
Correct Answer:
Verified
Q16: Briefly explain how the Sun generates energy.
Q30: One light-year is about 10 trillion kilometers.
Q36: Which of the following statements does not
Q57: In a ten-billion to one scale model,
Q59: What do astronomers mean by the Big
Q60: Which statements correctly locate the formation of
Q64: One of the most fundamental discoveries about
Q65: Our textbook discusses the cosmic calendar, a
Q66: If you could count stars at a
Q85: Briefly explain why an expanding universe implies