pls help hurry pupp! If a galaxy moves away from us 4 times its original distance,...
pls help hurry pupp!
If a galaxy moves away from us 4 times its original distance, how would its redshift change?
It would remain the same
It would increase by a factor of 1/2
It would increase by a factor of 2
It would increase by a factor of ¼
It would increase by a factor of 4
A star that is 100 light years away from us has a luminosity of 1 L_Sun. What would its luminosity be if it were 1 light year away from us?
Group of answer choices
¼ L_Sun
½ L_Sun
1 L_Sun
2 L_Sun
4 L_Sun
Homework Answers
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pls help hurry pupp!
If a galaxy moves away from us 4 times its original distance,...
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choose correct answer. no explanation needed
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