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Some stars explode as supernovae when they run out of the hydrogen which they depend on to stay hot. Another way is due to binaries - when a particularly large star, e.g. a red giant, attracts a smaller star due to gravitational pull, and they orbit each other. The star cannot bear the heat and explodes in a massive amount of heat and light - that is how novae happen. A supernova has a much larger effect than a mere nova, and they happen when the star collapses due to reduction of fuel before the spontaneous explosion, and thus causing it to be much larger and brighter.

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12y ago
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12y ago

It's complicated, but basically it has to do with it running out of fuel. When this happens the core collapses, and the resultant increase in temperature and pressure blows the outer layers of the star off.

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13y ago

Stars do not blow up, stupid. They simply die in a nebula you idiot.

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14y ago

It is because some of the stars aren't massive enough to explode that big. The stars like the size of the Sun will just cool off and not going to explode.

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Q: Why do some stars don't explode into a supernovae?
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Will all stars that become supernovae leave behind a neutron star?

No, some leave a black hole instead of a neutron star.


Is a supernova massive?

A supernova can be massive but some aren't. Every supernova is a dieing star. Supernovae are exploding stars. They represent the very final stages of evolution for some stars. Supernovae, as celestial events, are huge releases of tremendous energy, as the star ceases to exist, with about 1020 times as much energy produced in the supernova explosion as our Sun releases every second.


When a star dies does its mass change?

If it explodes; yes. If it just goes out, then no. Note that large stars generally all explode to some degree (the more massive, the greater the explosion). The stars that don't are the small (red) stars that last a long, long time.


How is iron collected from earth?

iron cam from meteorites, iron is formed inside stars and when stars explode its content is spread in the universe and so some of it collided on earth to your email just email me and if you have a sister and hot email me account


How is a supernova related to matter found on earth?

A supernova is a star that explodes. Stars about the size of our Sun explode when they run out of "fuel". The fuel they have is Hydrogen which they fuse into Helium and thus convert mass into energy (they shine brightly), Then the Helium and some Hydrogen are fused into heavier elements (Lithium etc) making more energy. All elements heavier than Carbon and lighter than Iron are made in the supernova explosion that comes at the end of the star's "life". Heavier stars will make even heavier elements. The Earth is mostly made of these heavier elements. We are all stardust.

Related questions

How do you know that some stars explode as supernovae?

How do we know? Because we can observe it happening.


What is it called when stars in the sky die?

Some stars explode in a supernova.


Do stars explode?

Some stars do. They can be nova or supernova stars, depending on the scale of the explosion.


Will all stars that become supernovae leave behind a neutron star?

No, some leave a black hole instead of a neutron star.


Is a supernova massive?

A supernova can be massive but some aren't. Every supernova is a dieing star. Supernovae are exploding stars. They represent the very final stages of evolution for some stars. Supernovae, as celestial events, are huge releases of tremendous energy, as the star ceases to exist, with about 1020 times as much energy produced in the supernova explosion as our Sun releases every second.


Is the Philippines ready for different discoveries in astronomy?

Yes. With modest instruments, we can discover comets. Scanning the night sky with modest-sized telescopes might reveal a previously unknown asteroid. Supernovae might appear in some bright galaxies, or some of the red giant stars could explode as supernovae anytime soon. Prof. Christopher Go of Cebu City discovered the reddening of a storm system in Jupiter which soon was dubbed Red Spot Junior. We can contribute to the discovery of extrasolar planets. We can constantly monitor the planets and detect changes in their atmospheric systems.


Who are some European movie stars?

dont have a clue


When a star dies does its mass change?

If it explodes; yes. If it just goes out, then no. Note that large stars generally all explode to some degree (the more massive, the greater the explosion). The stars that don't are the small (red) stars that last a long, long time.


Why do some stars become red giants and others become supernova?

i dont know


A dying giant star can suddenly explode becoming?

i dont understand your question but this might help when a star for example the sun its in its middle stages of life like in 10,000,000 years it will become a red giantand then become a white drawf or it become some other things but i dont think the stars wil actually blow up. hopefully this awnsers your question


Do stars leave the universe?

In a way , they don't actually leave, but some transform into base elements , or gasses, when their fuel burns away, and they explode or just burn out.


How is iron collected from earth?

iron cam from meteorites, iron is formed inside stars and when stars explode its content is spread in the universe and so some of it collided on earth to your email just email me and if you have a sister and hot email me account