12/21/12 countdown clock.......

You could go by my prediction. I have never been wrong.

The world will end!

I just don't set a date.

I will. In about 5 billion years when the sun starts trying to burn iron and turns into a red giant. I don't know if humans will be around to witness it though.

You could go by my prediction. I have never been wrong.

The world will end!

I just don't set a date.

I will. In about 5 billion years when the sun starts trying to burn iron and turns into a red giant. I don't know if humans will be around to witness it though.

Very slim chance on that one.

You could go by my prediction. I have never been wrong.

The world will end!

I just don't set a date.

I will. In about 5 billion years when the sun starts trying to burn iron and turns into a red giant. I don't know if humans will be around to witness it though.

Very slim chance on that one.

Yep, this type star can't make iron, thankfully, since to fuse iron is impossible, when a large star tries(like a blue giant), it goes kaboom!!

It isn't impossible, but it doesn't generate any energy either.

The common use of dwarf to mean main sequence is confusing in another way, because there are dwarf stars which are not main-sequence stars. For example, white dwarfs are a different kind of star that is much smaller than main-sequence stars—being roughly the size of the Earth. These represent the final evolutionary stage of many main-sequence stars.

Massive stars generate energy by the nuclear fusion of elements. Unlike the Sun, these stars possess the mass needed to fuse elements that have an atomic mass greater than hydrogen and helium, albeit at increasingly high temperatures and pressure, and for increasingly shorter periods of time. The degeneracy pressure of electrons and the energy generated by these fusion reactions are sufficient to counter the force of gravity and prevent the star from collapsing. The star fuses increasingly higher mass elements, starting with hydrogen and then helium, until finally a core of iron and nickel is produced. Fusion of iron or nickel produces no net energy, so further fusion is unable to take place, leaving the nickel-iron core inert.

When the mass of the inert core exceeds the Chandrasekhar limit of about 1.4 solar masses, electron degeneracy alone is no longer sufficient to counter gravity. A cataclysmic implosion takes place within seconds, in which the outer core reaches an inward velocity of up to 23% of the speed of light and the inner core reaches temperatures of up to 100 billion kelvin. Neutrons and neutrinos are formed via reversed beta-decay, releasing about 1046 joules (100 foes) in a ten-second burst. The collapse is halted by neutron degeneracy, causing the implosion to bounce outward. The energy of this expanding shock wave is sufficient to detach the surrounding stellar material, forming a supernova explosion, while the shock wave and extreme conditions briefly allow the production of elements heavier than iron.[3] Because of the underlying mechanism, the resulting variable star is also described as a core-collapse supernova.

So our sun won't go "kaboom". Phew :)

But what it will do is not pleasant either. It will expand to about the orbit of Mars.

So, still nothing? hmmm

at least I'll get to enjoy my vacation after all.

You could go by my prediction. I have never been wrong.

The world will end!

I just don't set a date.

I will. In about 5 billion years when the sun starts trying to burn iron and turns into a red giant. I don't know if humans will be around to witness it though.

Very slim chance on that one.

Yep, this type star can't make iron, thankfully, since to fuse iron is impossible, when a large star tries(like a blue giant), it goes kaboom!!

It isn't impossible, but it doesn't generate any energy either.

You could go by my prediction. I have never been wrong.

The world will end!

I just don't set a date.

I will. In about 5 billion years when the sun starts trying to burn iron and turns into a red giant. I don't know if humans will be around to witness it though.

Very slim chance on that one.

We will have destroyed the earth ourselves by then...

You could go by my prediction. I have never been wrong.

The world will end!

I just don't set a date.

I will. In about 5 billion years when the sun starts trying to burn iron and turns into a red giant. I don't know if humans will be around to witness it though.

Very slim chance on that one.

We will have destroyed the earth ourselves by then...

I agree Jukie

Probably true, but with any luck and foresight, most of our descendants will be starting news worlds on distant planets before then.
(ok mabey I play Civilization one too many times)