What's in a black hole

1. What's in a black hole where does it lead to, how big is it?
2. how big is our universe, the sun Jupiter, mars etc is that just our universe? how far away is another universe?
3. Is it true that the sun will be more active this yeah then it has been any other year such as solar flares?
4. Could we live and survive without the son?
5. Could we live and survive without a moon?

It's not a hole, it doesn't go anywhere. There's just so much mass that the gravity is so great that it collapses mass, then it collapses what mass is made of and what whatever mass is made of is made of and so on. The gravity is so great that it warps space and time to an extreme. They think that this warping of space and time could be stabilized into a wormhole with negative energy but the mass still doesn't go anywhere cause it's the mass that distorts space and time. Nothing that goes into a black hole comes out but what's in a black hole can evaporate out as Hawking Radiation. The black hole itself is infinitely small but there is an event horizon within which the gravity is too strong for light to get out and this is the huge black area that looks like a hole, it gets bigger the more stuff that falls into the black hole.

The big bang defined a size to the Universe but when we tried to measure the shape of the Universe from the background radiation, we came up with it being flat. Of course a small difference in the measurement that we can't perceive would make it just very very big not flat but flat means it's infinite. So we really don't know how big the Universe is other than it's really big. Our Sun, Jupiter and Mars is just in our solar system, that would be like just a grain of sand if all the beaches in the wold were the universe so no, the sun, Jupiter and mars etc. is not our universe, it's just barely a piece of the universe.

The Sun will be at it's 11 year peak and will be as active as it is every 11 years, so it'll be like it was in 2001.