EthanIsInSpace

EthanIsInSpace

1.Our spirel galixy has a giant black hole in the midle. 2.stars are gas explosions in space.

spirel galexy. gas explosion Black holes What is a black hole? A Black hole is a region were gravity is so strong that any light that tries to escape gets dragged back in, because nothing can travel faster then light, everything else gets dragged back in to.

Black holes are concentrated areas of mass so immense, that the mammoth force of gravity denies anything within a certain area around it from passing. This area is called the event horizon of a black hole.

As more things fall into a black hole, it gets bigger and bigger and the event horizon moves further out.

Black holes are formed when a star or a galaxy gets so dense that it collapses under its own gravity, so you are squashing a very large amount of matter into a very small space.

Another way a black hole forms is when stars that have burned up their fuel explode like giant hydrogen bombs called supernovas. The explosion drives off the outer layers of the star in a great expanding shell of gas, this pushes the central regions inwards causing the matter to squash. If the star is more than a few times the size of our sun, a black hole will form.

How can you see a black hole?

You can’t see a black hole because no light can get out of a black hole. But you can detect a black hole by the way its gravity is pulling on other things like stars orbiting or being pulled into a black hole. We also see discs of dust and gas rotating around a central object that we cant see but we know can only be a black hole.

Did you know?


 * 1) Black holes may exist in the middle of every galaxy.
 * 2) Matter spiralling into a Black hole is torn apart and glows so brightly that it creates the brightest objects in the universe called quasars.
 * 3) If you were sucked into a Black hole, your body would be stretched out like a piece of spaghetti.
 * 4) A galaxy named NGC 4261 has at its core a super massive black hole about half a billion times bigger than our Sun. Surrounding this black hole is a disc of cold dark dust approximately 800 light years in width.