Rank the following 4 items by how long it takes for light to reach us from these objects, from shortest to longest.
A) the Andromeda Galaxy, the center of the Milky Way, Pluto, Sun
B) Pluto, Sun, center of Milky Way, the Andromeda Galaxy
C) Pluto, Sun, the Andromeda Galaxy, center of the Milky Way
D) Sun, Pluto, the Andromeda Galaxy, center of the Milky Way
E) Sun, Pluto, center of the Milky Way, the Andromeda Galaxy
Correct Answer:
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Q3: On the scale of the cosmic calendar,
Q4: What is the diameter of the galaxy,
Q5: An astronomical unit (AU)is .
A)the current distance
Q6: Which of the following is not a
Q7: The farthest bright galaxies that modern telescopes
Q9: Astronomers infer that the universe is expanding
Q10: The term observable universe refers to .
A)the
Q11: The number of stars in the Milky
Q12: Earth is made mostly of metals and
Q13: How do the speeds at which we
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