A "supernova" is a nova (Latin "new") explosion of a very large star, creating a nebula of illuminated gas that is one of the most visible of all celestial phenomena.
Remember that a star is a nuclear fusion "engine" that is powered by the fusion of lighter elements to create heavier ones (up through iron). As lighter elements are fused to create heavier ones, energy is released in huge quantities. Gravity holds the star together against the outward force of all the fusion reactions, and the star operates in equilibrium. The extreme energy in the star allows for fusion reactions to continue to occur. But eventually the core of the star is largely sulfur and silicon. The contraction and heating of the star's core allows it to begin massively fusing silicon into iron, and this reaction absorbs energy rather than releasing it.
At some point, the energy created in fusion is insufficient to hold the star "up" against its own gravity, and, having exhausted its "regular" fuel, it will collapse. This is the supernova process. The star collapses causing the outer layers to violently explode outward as gases and dust. The compression of the body of the star in the collapse creates enormous thermal energy that supports the endothermic fusion reactions that create those trans-iron elements (up through uranium). It all occurs in a relatively short period of time. Afterwards, the remnant core may become a super-compressed neutron star, or even a black hole, if the star is massive enough.
Supernovae help enrich the interstellar medium with heavy elements, and shockwaves from the explosion may also trigger star formation. It is believed that the Sun and Solar System formed as a result of a nearby supernova.
While a supernova has not been observed from Earth since 1604, supernova remnants indicate that they occur, on average, about once every 50 years.
A supernova occurs when a massive blue-white star uses up it's hydrogen and explodes, releasing more energy than any other known force in Nature. Supernovas can be seen clearly thousands of light years away.
A supernova
Either somebody shoots at the star. Or kills the star turning it into a supernova.
A white dwarf supernova can only happen in binary pairs where the white dwarf rips matter from the larger star and eventually becomes unstable and it collapses in on itself.
Well a supernova is the explosions or death of a star, so the Vela supernova is probably the supernova of the star vela!
No, a supernova is an explosion of a star. What left of a supernova are celestial bodies.
A supernova
Either somebody shoots at the star. Or kills the star turning it into a supernova.
Black holes came from old big stars that went supernova as it dies. Supernova causes the star to collapse into a black hole
A gentle nudge from either a passing star or a nearby supernova.
A white dwarf supernova can only happen in binary pairs where the white dwarf rips matter from the larger star and eventually becomes unstable and it collapses in on itself.
Well a supernova is the explosions or death of a star, so the Vela supernova is probably the supernova of the star vela!
No, a supernova is an explosion of a star. What left of a supernova are celestial bodies.
A giant star would experience a supernova explosion, in order to become a white dwarf.
Iron cannot release energy by fusion. When a star has used up all the lighter elements and has just iron left, it has no more nuclear "fuel". That causes the star to contract then explode very violently as a supernova.
I believe it's when a star runs out of fuel to burn so it inplodes itself (not sure if that's how to spell inplode)
The Production Budget for Supernova was $60,000,000.
A red giant can become a supernova.