Where was supernova 1987a located?
A) in the Orion Nebula, M-42
B) in Sagittarius, near the Galactic Nucleus
C) in our companion galaxy, the Large Magellanic Cloud
D) in M-13, one of the closest of the evolved globular clusters
E) near the core of M-31, the Andromeda Galaxy
Correct Answer:
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Q21: For a nova to occur, the system
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Q31: The element with the most stable nucleus
Q31: A surface explosion on a white dwarf,caused
Q34: At temperatures of _ K, photons can
Q37: The core of a highly evolved high
Q38: The Chandrasekhar mass limit is:
A).08 solar masses.
B).4
Q40: Most of the energy of the supernova
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