In 1987, a supernova was detected in the Large Magellanic Cloud galaxy, which is approximately 169,000 light years from Earth. Which event produces a supernova?
A B C D
the explosion of a massive star the birth of a main-sequence star the collapse of a medium-sized star the collision of one star with another
Question: In 1987, a supernova was detected in the Large Magellanic Cloud galaxy, which is approximately 169,000 light years from Earth. Which event produces a supernova?
(A) the explosion of a massive star
(B) the birth of a main-sequence star
(C) the collapse of a medium-sized star
(D) the collision of one star with another

Answer: (A) the explosion of a massive star
Answer: (C) the collapse of a medium-sized star
Question: In 1987, a supernova was detected in the Large Magellanic Cloud galaxy, which is approximately 169,000 light years from Earth. Which event produces a supernova?
(A) the explosion of a massive star
(B) the birth of a main-sequence star
(C) the collapse of a medium-sized star
(D) the collision of one star with another
Answer: (A) the explosion of a massive star