Is it true that in 5 billion years the sun will come?

Question

and swallow up the earth and everything else up in it's path

Answer 1

That's what the astrophysicists predict. They believe the sun has existed a little over half it's predicted lifetime and in about 4-5 billion years it will start to turn into a red giant and eventually grow so large that it will swallow up Mercury, Venus and Earth.

See the link below from Stanford University.

Answer 2

The Sun cannot blow up; it cannot go supernova; it cannot become a black hole. It is not big enough (it does not have enough mass).

In approximately 5 billion years, the sun will have "run out of fuel" (hydrogen at the core) and will puff out into a red giant (like Betelgeuse in Orion, for example). It will grow enough that its size then will be as large as our orbit now is.

However, before it gets there, the sun will have lost a bit of mass (all that energy being given off as light and heat has to come from somewhere: e = mc^2 and all that) so that our orbit will be a bit bigger than it is now.

Will we be far enough to avoid being inside the red giant sun? Hard to tell. It is going to be close.

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Meanwhile, in about (the same) 5 billion years, the Andromeda galaxy and our Milky Way will collide. Stars are so far apart that there will be very few actual stars colliding. However, gravitational effects may toss some stars outside the galaxies and some others into the centre of one or the other galaxy. Will the bloated sun be one of the survivors? Too early to tell.

Answer 3

Kind of. In a few billion years the Sun will run low on hydrogen fuel. Somewhat counter-intuitively that will cause it to get much brighter and swell in size greatly, becoming a red giant star. Even if it doesn't get big enough to engulf the Earth it will fry the Earth, boiling away the oceans and turning the planet into hellish place like Venus, where there is no water and it is hot enough to melt lead.

But 5 billion years is so much longer than a human lifetime that for all practical purposes it is forever.

Answer 4

Yes. That is the predicted event when a star like our sun runs out of its current fuel supply. The sun will expand to about the radius of the earth's orbit. It may not actually engulf the earth (as it will Mercury and Venus) ... but it will certainly leave the Earth a charred piece rock much like Mercury is today.

But that's 5 *billion* years away. To put that in perspective, the earth is about 4.6 billion years old (pretty close to midway in its life cycle).

Answer 5

its certainly possible, but i think the earth is moving closer to the sun not the other way around. unless your talking about the sun becoming a red giant, then yes it will swallow earth and continue to grow till i believe jupiter.

Answer 6

I wouldn't use that word, but yes. In approx 5by the sun will use up its hydrogen, beginning its helium cycle: swelling in size to that of a red giant, engulfing the earth and the rest of the inner solar system. I would advise leaving before that happens.

Answer 7

Who cares? I'd be dead by then.
But how would the sun "swallow" the earth if it's made from hydrogen (about 74% of its mass, or 92% of its volume), helium (about 25% of mass, 7% of volume), and trace quantities of other elements. There's only 2 chances. 1. The sun stops sending sunlight. 2. It's explodes and wipes out the whole populaton.

Answer 8

Yeah it's true.
It will expand massivley, cool down and swallow up all the planets out to Mars.

Answer 9

predicted, but when will it become a red giant? A very long time. Chances are very high that the human race will have already been destroyed.

Answer 10

Not sure on the timeline but like all stars the sun will supernova which will destroy Earth. This is not a theory but a fact. No star lasts forever.

http://en.wikipedia.org/wiki/Supernova