Black holes are really cool and very dangerous. If you shine a flashlight in one, the light would just stop. Nothing escapes a black hole. How are they created? Well, when a huge star burns out all it’s energy, it explodes into a super nova. Here is a picture.
The stuff from the super nova packs down into a very dense object known only as a neutron star. Here is a beautiful picture of a neutron star.
So when a neutron star is too great in power, the gravitational forces are overwhelmed and the neutron star collapses into a black hole. Going into a black hole would be really weird and painful. You would be slowly stretched one inch at a time. How much would that hurt? Go back in time about 400 A.D and do something illegal. It would hurt worse than that. But on the weird side of the black hole, people watching you go in wouldn’t see you go in. They would see you go slower and slower and eventually vanish into the air. Notice I didn’t say ‘thin’ air. What is thin air? The air isn’t thin, it’s all around us and it has no shape. In the sense of this sentence, “She vanished into thin air” is like saying,”She jumped in the small water”. ‘Small Water’ doesn’t exist but a name for a small amount of water does. Like: lake, puddle, drop, stream, Pond . Anyway, black holes occur every 300 years and our sun is not big enough to go through this process so we’re safe! Yay for us! No need to worry about our planet being sucked into a black hole! According to the Doctor, they decide to blow up the earth. Come along Ponds, let’s have a look. 🙂