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The Brainliest Answer!
2015-10-11T12:00:21+05:30
Hello there,

nebula is a cloud made up of hydrogen ,helium and plasma.it is from a nebula a star is born...
pulsar is a star that emits rapid and periodic pulses or waves of radiation...
it was the center of the star before collapsing under gravity before a supernova explosion.
i hope this helps u.... 
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