Great question. On average, a supernova, when it blows up, has more light than that of 1 billion suns and has a temperature of about 100 billion degrees. If you go here you can see how one star, when it goes supernov,a is brighter than most of the galaxy (the single bright object is the supernova) http://en.wikipedia.org/wiki/SN_1994D
For its size, a supernova rapidly expands, then slows down over time as it cools. The pretty pictures that you see of nebula, such as the Eagle Nebula, are what happens over time after a star has gone supernova.
t forms a nice, cool area of gas that eventually is collapsed down due to gravity to form new stars. Needles to say, supernova are very big explosions, you don’t want to be near one. Luckily there are no stars near us that will do this.
Great question. On average, a supernova, when it blows up, has more light than that of 1 billion suns and has a temperature of about 100 billion degrees. If you go here you can see how one star, when it goes supernov,a is brighter than most of the galaxy (the single bright object is the supernova)
http://en.wikipedia.org/wiki/SN_1994D
For its size, a supernova rapidly expands, then slows down over time as it cools. The pretty pictures that you see of nebula, such as the Eagle Nebula, are what happens over time after a star has gone supernova.
http://en.wikipedia.org/wiki/Eagle_Nebula
t forms a nice, cool area of gas that eventually is collapsed down due to gravity to form new stars. Needles to say, supernova are very big explosions, you don’t want to be near one. Luckily there are no stars near us that will do this.
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