A light-year is a unit commonly used in astronomy as a measure of
A) time.
B) speed.
C) mass.
D) distance.
E) acceleration.
Correct Answer:
Verified
Q1: When a change occurs on the surface
Q3: A light-hour is a measure of
A) time.
B)
Q4: If one thinks about the distance between
Q5: The time it takes light to cross
Q6: Our galaxy and the few dozen nearest
Q7: The distance to the nearest large spiral
Q8: One of the nearest stars, Alpha Centauri,
Q9: After the Sun, the next nearest star
Q10: What is the approximate number of stars
Q11: The diameter of the Moon is
A) larger
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