Multiple Choice
Type I supernovae have an absolute magnitude of -20.If you discover a Type I supernovae in a distant galaxy that has an apparent magnitude of 22,then how far away is this galaxy?
A) 0.3 Mpc
B) 40 Mpc
C) 1,200 Mpc
D) 2,500 Mpc
Correct Answer:
Verified
Correct Answer:
Verified
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