What happens if a sun explodes?

Answer 1

Depends on the mass of the sun.
When our sun will explode, its explosion will encompass the orbits of Mercury, Venus, Earth and Mars. These rocky planets will be simply vaporised. Further planets will suffer seriously from the show and heat wave, and will probably just "evaporate" as well (do not forget they are mostly formed with gases).
The our sun will collapse in what is called a red star, without emitting any heat.
If the sun is much bigger, it will explode, its remnants will then recollapse on itself to form a new star, where a new cycle of fusin will start. It will go into these cycles until the sum is made essentially of iron. At that time, no more nuclear reaction will occur and the star dies...
Our sun is currently burning Hydrogen, converting it into helium.
If it were a little bit more massive, it would explode then collapse again into a helium star. The gravitational forces will heat up the interior, creating fusion of the helium into carbon. When all the helium has burnt, bang again for a new cycle.
If the star is big enough (roughly 3-4 times as big as our sun, it will eventually collapse into a black hole...
No worries, our sun will continue to burn for 10,000,000 years.

Answer 2

What Would Happen If The Sun Exploded

Answer 3

One: The Sun isn't going to explode - its going to turn into a red giant, (effectively boiling the Earth, possibly even burning it entirely), before eventually tossing off several layers of gases (becoming a 'planetary nebula', with the remaining material condensing into a white dwarf Since this will not happen for about 5 Billion years. 'Homo Sapiens' have been around for less than a half million years ( 1/10,000 of that time) and 'Homo Erectus' only started walking upright perhaps 2 million years ago (1/2,500 of that time), it would seem unlikely in the extreme that people (as we would recognize them) would still be on the Earth in 5 Billion years. For a science project, you could take a rope 50 feet long - that could represent the amount of time left till the sun 'swallows' the earth. Now, beside that, you could place a bean or a popcorn seed (something about 1/4'' in length) to represent the 2 million years of homo erectus. Next to that, a piece of pencil lead (around 1/16'' thick) to show the span of homo sapiens. The thickness of a sheet of paper might be used to represent the time from the Egyptians to present-day (though that's actually much too thick). Hope this helps!

Answer 4

Gee, whatta bunch of paranoids ... you only asked about "a" sun, not "the" sun.
Suns, stars that is, are basically on-going thermonuclear explosions held in relative balance by the immense gravity of their central cores. No one knows what the core of a sun really is: neutronium, black holes (singularies of such intense gravitation that not even light can escape), or marshmallow fluff. But probably not marshmallow fluff.
Anyway, when the balance between gravity and explosion gets out of whack, the sun explodes. When a sun explodes (please God not our sun, at least until we learn to travel in space), the outer layers blast away as an expanding sphere of matter and plasma and radiation.
This tends to crisp the planets (if any) that were circling the star. Tough tiddly-winks for any life that may have existed on those planets, but then, they should have developed spaceflight, shouldn't they?
What remains behind after the stellar explosion is the core material (neutronium, black hole, or s'more) which may continue to radiate in a reduced way (sort of like a chunk of hot iron after you pull it from the forge) for a very long time.
Cheers.

Answer 5

Even if the force of the explosion didn't sent deadly radiation and solar material crashing into the earth, and even if the lack of a sun there, and the lack of its gravitational well, no longer held the earth in orbit so we all now go rolling off into space, there would no longer be any significant source of light or heat. All the plants would die. All the animals that live on the plants would die. And all the people who live on the plants and animals would die. If we don't freeze to death first. Or if whatever new weather issues come along don't wipe us out first. Not to mention the earthquakes and whatever the moon starts doing with the new gravity issues.

Answer 6

Everyone knows that the sun is going to explode after 5 billion years. It is going to be a huge-huge-huge explosion!!! Maybe the earth will disappear in the explosion. Then the sun is going to be a red star. Or a giant red star. And then it going to cool off. At least that is what scientist say.

Answer 7

The sun is made up of explosions.

Answer 8

Or if somebody installs a curtain between the Sun and the Earth?

Answer 9

Science estimates that all life would end 8 minutes following the occurrence.

Answer 10

there would be no sun to heat the earth and we would have another iceage but parts of the sun would prob colliede with other planets and eventually hit ours