Multiple Choice
In 2004 astronomers made a significant discovery that enabled them to test some of the predictions of general relativity. What was this discovery?
A) a neutron star with a mass more than 100 times the mass of the Sun
B) two neutron stars collided with each other
C) a pulsar that was not precessing and, in fact, that aimed its radiation beam directly at Earth
D) two pulsars in orbit around each other
Correct Answer:
Verified
Correct Answer:
Verified
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