Black Holes

A friend came yesterday to visit me. He's lately developed a liking for stars, so he asked if he could use our ''sky scout'' and telescope.

We where star gazing for a while, saw the moon up close, Andromeda's galaxy, Altair and other stars.
When we finished that, he started talking to me about Black Holes, but it sounded so complicated that he was doing my head in. So I did a bit of internet research and learned something new.

A Black Hole is an area in space with a gravitational force so strong that even light can't escape from it. It's called black because it absorbs all the light from the stars and galaxies it engulfs.

All the heat and gasses from the stars spirals inwards towards the center of the hole creating powerful emissions that can be sensed from earth.

There are seven different types of Black Holes. From the ones created by the gravitational collapse of a star, which are the least powerful ones. To those formed by the gravitational force of a galaxy containing several billion stars, which are the strongest ones.

When they concentrate too much energy, they emit X-ray radiations that can clearly be seen by astronomers on earth. These radiations are named micro quasars.