Q. In the universe, what are pulsars?
(A) A group of stars
(B) Rotating neutron stars
(C) Explosion of a star
(D) Radio waves emitted by a star
Answer: B
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Pulsars are rotating neutron stars observed to have pulses of radiation at very regular intervals that typically range from milliseconds to seconds. Pulsars have very strong magnetic fields which funnel jets of particles out along the two magnetic poles. These accelerated particles produce very powerful beams of light.
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