The Truth Behind Black Holes

Black holes are really crazy, in short. They are so wide, deep and strong. And gravity effects time. These are what we will be talking about today ==>

Black holes are, in a way, invisible. Some people think that little black holes are just floating around in our galaxy. And the black hole at the center of our galaxy is called Sagittarius (Sgr) A*. It's a supermassive black hole, about 100 million times the sun (in size).

If you know a bit about Einstein's discoveries, you may know that he discovered that gravity effects time. And, if humans could get close to a black hole and survive, each minute you would spend there is a 1,000 years on Earth. This is because the gravitational pull force of one of these holes is immensely strong.


Sources: National Geographic

Observable Universe Diameter

So, recently I have been doing lots of research on the diameter of the observable universe. It says on the wikipedia page that the diameter is 28.5 gigaparsecs, or gpc. One gigaparsec is 3.26 billion light-years. One light-year is 5.8 trillion miles. So multiply all of them together (28.5 * 3.26 * 5.8) and you get 538.878 billion trillion miles long!! Pretty cool, right? So, basically I was the only one who thought that it was either between 538-557 billion trillion miles long. But, this is awesome, I was checking out a space book and they thought it was 546!!!! Yay, finally someone who thinks nearest to me! See ya then 😀