Given that our solar system is now about 4.60 billion years old?

Question

In how many years will we need to worry about the Sun running out of hydrogen for fusion?

Answer 1

We need not worry about that. Humans will not be around that long. Better be worrying about what screw ball thing Bush is going to do next.

Answer 2

The sun will likely last another 5 billion years or more.

There is still a long ways away before the sun begins to burn itself out and become a red giant. It's a medium sized star, but it's in a healthy state.

EDIT: Minor goof. The Milky Way galaxy is 12-13 billion years old, not the solar system.

Answer 3

the sun will keep burning for about another 5-6 billion years. stars are created when a giant dust clod in space starts to clump together and get really dense which makes the gravity more intense which in turn pulls more dust and debris to it. eventually when the density gets really high the core will heat up and start a chain reaction that set everything on fire and somehow produces hydrogen, when the hydrogen is produced the extreme heat will combine it with atoms of other gases which creates fusion. when all the hydrogen has fused with other matter the sun will die out and implode creating a black hole.

Answer 4

About another 4 billion years.
It'll briefly fuse helium (what it makes by fusing hydrogen), but as that's not nearly as easy or efficient as fusing hydrogen, that will signal the beginning of the end for our star. Shortly (a million or so years) after that, our star will puff up tremendously into a red giant, with its outer atmosphere reaching past earth, and frying anything still here on our planet. So we have about 4 billion years to find a new home if we want to survive :)

Answer 5

Our sun will keep using it's fuel for about another 5 billion years. Stars of the size of the sun last around 10 billion years total.

Answer 6

The sun didn't ignite on the day of birth of the universe. It was millions of years after the big bang that stars began to be formed.

The Sun's current age, determined using computer models of stellar evolution and nucleocosmochronology, is thought to be about 4.57 billion years.[4]

The Sun is about halfway through its main-sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more than 4 million tonnes of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation. The Sun will spend a total of approximately 10 billion years as a main sequence star.

Answer 7

About 5 billion.

Answer 8

Scientists took an educated guess, guess being the key word, they say about 5 billion years but the way things are this world will be destroyed long before then so don't worry about it...

Answer 9

we wont need to worry about it. all of us here reading this will be long gone, and life on earth will also before then become unbearable as the Sun turn into a Giant Red, and then starts growing and consuming the first 3 or 4 planets. and thats us in there.

Answer 10

Lets put it this way- There is such a vast number of things that can go wrong before then that it's barely worth caring about.

But, to answer your question, the sun has about another 5 billion years of life left in her.

Answer 11

The Solar System. The solar system was named long before we knew that other solar systems existed. Just like the Sun is not the only Sun in the universe but we still call it the Sun.