The distance to the nearest large spiral galaxy, the Andromeda Galaxy, is 2.4 * 1022 m.How long does it take light to travel from Andromeda to us?
A) 4.4 years
B) 360 years
C) 1.2 thousand years
D) 2.5 million years
E) 4.5 billion years
Correct Answer:
Verified
Q2: A light-year is a unit commonly used
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
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
Q12: The Sun is a
A) supercluster.
B) moon.
C) galaxy.
D)
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