12Minnie1
12Minnie1 12Minnie1
  • 02-04-2017
  • Physics
contestada

what is a supernova?Why can a supernova explosions in space be seen but not heard on Earth?

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pontchita pontchita
  • 02-04-2017
B/c there isn't enough oxygen to produce the sound. The universe is "empty".
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floralghost
floralghost floralghost
  • 02-04-2017
A supernova is the last stage of a massive star's life; when its nuclear fuel has run out and its core collapses. Supernova explosions can be seen because the light it emits travels through space, making it visible to us. A supernova--or anything else in space can't be heard because sound doesn't travel in space; there is no molecules or particles for it to travel through. 
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