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10 Nov 2019
Suppose today we observe a supernova explosion in our neighboringAndromeda galaxy. Which of the following statements about thisevent are correct?
A. The explosion was observed in Andromeda about 1000 yearsago.
B. The light traveled about 1,000 years to reach the Earth.
C. The light from the supernova left Andromeda about 3 millionyears ago.
D. All of the choices are true.
E. Only the explosion was observed in Andromeda about 1000 yearsago and the light traveled about 1,000 years to reach the Earth aretrue
Suppose today we observe a supernova explosion in our neighboringAndromeda galaxy. Which of the following statements about thisevent are correct?
A. The explosion was observed in Andromeda about 1000 yearsago.
B. The light traveled about 1,000 years to reach the Earth.
C. The light from the supernova left Andromeda about 3 millionyears ago.
D. All of the choices are true.
E. Only the explosion was observed in Andromeda about 1000 yearsago and the light traveled about 1,000 years to reach the Earth aretrue
Jean KeelingLv2
7 Feb 2019
