does anyone know when our sun will eventually burn out?

Ya, there is something very wrong here. The Sun is in the wrong stage. It is not that we are all going to die, but it is not in it's youth. I don't know enough about the life of a Sun, nor do the experts around here. It is manifesting the last stage. However, the sun's concept of time is not like ours. It could last for a few more million years before it terminates. Also, before anyone freaks, there are signs that a sun will manifest well before it dies, and our sun is not manifesting them. That means the sun is safe and will be for some time.

It is safe but it would be nice if someone could get a more accurte reading on it. Not some story that it will be fine for another 10 billion years. It simply is not that young and anyone that says it will turn into a red dwarf deserves to have their license/certificates removed as that is huge error.

Our Star, the Sun

We all know that the Sun is overwhelmingly important to life on Earth, but few of us have been given a good description of our star and its variations.

The Sun is an average star, similar to millions of others in the Universe. It is a prodigious energy machine, manufacturing about 3.8 x 1023 kiloWatts (or kiloJoules/sec). In other words, if the total output of the Sun was gathered for one second it would provide the U.S. with enough energy, at its current usage rate, for the next 9,000,000 years. The basic energy source for the Sun is nuclear

fusion, which uses the high temperatures and densities within the core to fuse hydrogen, producing energy and creating helium as a byproduct. The core is so dense and the size of the Sun so great that energy released at the center of the Sun takes about 50,000,000 years to make its way to the surface, undergoing countless absorptions and re-emissions in the process. If the Sun were to stop producing energy today, it would take 50,000,000 years for significant effects to be felt at Earth!

The Sun has been producing its radiant and thermal energies for the past four or five billion years. It has enough hydrogen to continue producing for another hundred billion years. However, in about ten to twenty billion years the surface of the Sun will begin to expand, enveloping the inner planets (including Earth). At that time, our Sun will be known as a red giant star. If the Sun were more massive, it would collapse and re-ignite as a helium-burning star. Due to its average size, however, the Sun is expected to merely contract into a relatively small, cool star known as a white dwarf.

It has long been known that the Sun is neither featureless nor steady. (Theophrastus first identified sunspots in the year 325 B.C.) Some of the more important solar features are explained in the following sections...Cont Here

It was my understanding that the sun will do 1 of 2 things. It will either burn out as described above and all life on earth will freeze over and be in constant darkness. and 2. it will overheat and explode and all the flaming debris will destroy earth like an insect under a microscope. Either way its not for a long time yet and we will be long gone by then