Multiple Choice
The Type II supernova that created the Crab Nebula was seen by Chinese and Arab astronomers in the year A.D.1054.Because the star is 6,500 light-years away from us,we know the star exploded in the year
A) A.D.7554
B) A.D.1054
C) 5446 B.C.
D) 7554 B.C.
Correct Answer:
Verified
Correct Answer:
Verified
Q6: Every pulsar is a neutron star, but
Q8: Which of the following is NOT a
Q9: You observed three different star clusters and
Q10: As a high-mass main-sequence star evolves off
Q11: Using the Hubble Space Telescope,you discover a
Q13: Photons have no mass,and Einstein's theory of
Q14: Why do large,high-mass main-sequence stars never become
Q15: Suppose you measured H-R diagrams for the
Q79: Explain why a blue star cluster is
Q90: Galileo supposedly experimented with gravity by dropping