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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.
See the links and related questions below for more information
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoA massive one
yes most star are big but the answer you are looking for would be a super Giant Star and I'm not trying to play around here that is realy what the scientist call that type of star.
Wiki User
∙ 12y agoA supernova is the explosion of a high mass star.
Wiki User
∙ 12y agoA supernova is, basically, a large star (more than 2-3 times the mass of the Sun) exploding. Considering a Nova, the abovenumbers are in question.
Wiki User
∙ 12y agoWhen a star undergoes supernova, the result maybe either a black hole or a white dwarf.
Wiki User
∙ 13y agoStar. It has to be a very big and massive star to go supernova.
Wiki User
∙ 9y agoits an explosion to high mass stars when those certain stars lose fuel kinda like they die
Wiki User
∙ 11y agoA supernova is an exploding star.
Wiki User
∙ 11y agohigh-mass star.
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What is the name for a supernova cloud?
Nebula. Some nebulae are formed as the result of supernova explosions. The material thrown off from the supernova explosion is ionized by the supernova remnant. One of the best examples of this is the Crab Nebula, in Taurus. It is the result of a recorded supernova, SN 1054, in the year 1054 and at the centre of the nebula is a neutron star, created during the explosion.
What happen when a supernova collapses suddenly?
A supernova occurs AFTER a star collapses suddenly. See related question
Which of these is least likely to result from a supernova?
your mom would be the correct answer.
When does supernova occur?
If two stars begin to orbit. However, novae are more common that supernovae, so you can't really say if the result of a binary will be a nova or a supernova.
Will a neutron star eventually go supernova?
No. A neutron star is left behind after a supernova. However, some gamma ray bursts may result from a collision between neutron stars.
What is the name for a supernova cloud?
Nebula. Some nebulae are formed as the result of supernova explosions. The material thrown off from the supernova explosion is ionized by the supernova remnant. One of the best examples of this is the Crab Nebula, in Taurus. It is the result of a recorded supernova, SN 1054, in the year 1054 and at the centre of the nebula is a neutron star, created during the explosion.
What happen when a supernova collapses suddenly?
A supernova occurs AFTER a star collapses suddenly. See related question
Which of these is least likely to result from a supernova?
your mom would be the correct answer.
Why are supernova considered factories for the production of heavy elements?
Many Supernova explosion is a result of a nebula the Nubula was the reason why we have a sun 5 billion years ago and today.
When does supernova occur?
If two stars begin to orbit. However, novae are more common that supernovae, so you can't really say if the result of a binary will be a nova or a supernova.
Will a neutron star eventually go supernova?
No. A neutron star is left behind after a supernova. However, some gamma ray bursts may result from a collision between neutron stars.
Is a red dwarf star made from a supernova?
No. A Red Dwarf is a very low mass star - less than our Sun. Only massive stars > 20 Suns will result in a supernova [See Related]
What is the Vela Supernova?
Well a supernova is the explosions or death of a star, so the Vela supernova is probably the supernova of the star vela!
IS a supernova a celestial body?
No, a supernova is an explosion of a star. What left of a supernova are celestial bodies.
What types of stars are thought to be the remnants of supernova explosions?
Supernova explosions are believed to generally result in a black hole, as the core of the star is collapsed into an unimaginably dense point mass. One can't really say that a black hole is any kind of star. Less powerful nova explosions probably result in pulsars or neutron stars.
Does uranium rely on any other energy sources?
The very large nucleus of the uranium atom is a kind of energy storage unit. The energy of that nucleus is the result of the nuclear synthesis reactions that take place in a supernova. In that sense, a supernova is the energy source of uranium.
Can supernova be a red giant?
A red giant can become a supernova.
