Avi Loeb

There was not a solar eruption that could devastate our technological infrastructure.

There was no impact by a big asteroid.

So we tend to think nothing bad can happen from the sky, but that's an illusion.

If we wait a few centuries, definitely there would be a huge solar eruption.

I actually wrote two papers about it,

But nobody pays attention until it happens.

That's a human nature that until something happens, we are not alert to it.

And so I believe there would be much more funding to defend the earth against such things once they happen.

No, so the sun is just a hot ball of gas that is being fueled by... It's basically a nuclear reactor, a fusion reactor that we are trying desperately to produce on Earth.

But the sun basically is a condensation of gas, a very hot... That got very hot at the center.

It just came together by gravity.

And at the center, the temperature reached about 13.5 degrees.

million degrees, high enough to burn hydrogen.

And so it's basically a nuclear fusion reactor that is held together by gravity.

And it gets its power from the nuclear reactions.

Eventually, it will consume all of its fuel.

And at that point, you know, it will die.

The nuclear reactor will stop working.

And then the core of the sun will condense into a metallic

ball roughly the size of the Earth.