1.

stars do not last forever ! when they die , they often blow up in a huge explosion. this explosion is called ....................... ( Big bang / Supernova)

Answer»

Kepler's supernova remnant. The explosion of a star is a catastrophic event. The blast rips the star apart and unleashes a roughly spherical shock wave that expands outward at more than 35 million kilometers per hour (22 million mph) like an interstellar tsunami.



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