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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
Suppose we were to observe two supernovas (exploding stars) exploding in our night sky on a particular night. If one was in the nearby arm of our Milky Way Galaxy while the other was in the Andromeda Galaxy, M31, 2 million light-years away from us, which of the following statements is correct concerning the actual explosion times of these supernovas?
A)   We know both stars exploded at the same time because we saw the explosions at the same time.
B)   We cannot tell which star actually exploded first because they are so far away.
C)   The supernova in the Andromeda Galaxy actually occurred after the one in our Galaxy.
D)   The supernova in the Andromeda Galaxy actually occurred before the one in our Galaxy.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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staedtler Author
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6 years ago
Grinning Face Exactly what I needed
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