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Questions tagged [explosion]

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9
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6answers
3k views

Why does matter stay collapsed in the core, following a supernova explosion?

Following a supernova explosion a star may turn into a white dwarf, neutron star, black hole, or just a stellar dust & gas leftover. Excluding the latter case, why and how does the star's core ...
4
votes
3answers
277 views

Can a black hole “supernova”?

In layman terms: nothing ever escapes the pull of a black hole, not even light when a super massive star reaches the end of it's life you get a supernova sometimes the "remains" of these stars can ...
3
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5answers
5k views

Why doesn't the Sun explode?

I know stars explode because of the fuel causing a fusion compound pushing it apart and the fuel runs out and it 'bounces' for lack of a better term. Given the fact that more massive stars are ...
4
votes
4answers
8k views

Why is iron responsible for causing a supernova?

Why is the element iron responsible for supernova? Can any star create more element than iron within the span of its life? I understand that when star dies due to supernova, other elements are ...
24
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2answers
6k views

Why do stars explode?

I always hear the narrator of documentaries say that a star exploded because it ran out of fuel. Usually things explode when they have too much fuel, not when they run out of fuel. Please explain...
19
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2answers
2k views

Explosions of black holes

I was bopping around YouTube and observed this enjoyably produced video. In it, when describing the behavior of a black hole with the mass of a US nickel, the narrator says, "Its 5 grams of mass will ...
30
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4answers
5k views

Are there observable changes in a star about to become supernova, minutes or hours before the explosion?

I am writing a science fiction novel, where a ship is stranded in a single star system (a red supergiant). One of the plot points is the star becoming supernova in several hours, so the characters ...
4
votes
1answer
344 views

Speed of blast from supernova

How fast does the blast front of a supernova expand at? Is it close to the speed of light or is it less than a quarter of the speed of light?
0
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2answers
220 views

Supernova explosion nearby

A nearby star has crossed Chandrasekhar's limit. How do we come to know when it will undergo supernova explosion? Or has it already undergone supernova explosion?
4
votes
1answer
131 views

Internet Resource which register all Ultra-long Gamma-Ray Bursts

I read in a scientific magazine there was new gamma bursts that last longer than usual. One was detected during december 2010, also known as Christmas Burst: GRB 101225A and another one in 9th of ...
7
votes
2answers
545 views

Why did the Chelyabinsk meteor explode?

In February, a meteor entered the Earth's atmosphere over Chelyabinsk, Russia and exploded, producing a shockwave blast that damaged hundreds of buildings around the explosion site in Russia. But why ...