I don't understand!!!

I feel like this too. It's a head fuck.

The edge of space can be defined as where light,radiation and gravity have not reached yet, obviously this is always expanding, a person could never reach the edge of space though. This is just something i learnt in physics but it still freaks me out as well, infinity is something a human mind cannot seem to grasp. Have a look at this cool app on this webpage

http://www.newgrounds.com/portal/view/525347

It's normal, I think about it a lot and it's very scary but it's helped me cope w/ the thought of death. Like we r nothing special. Doesn't matter what's happens in our life or to our world, we r such a tiny fraction in the universe

we do not know if there is an end to space, but it is possible that there is just an infinite loop, you start here and once you reach a certain point, you go back to the start. of course that is to put it simply. just leave those thoughts for people like Stephen Hawking.

I never understood how numbers could go on forever and ever.

Ask a science teacher person

Prepare your mind for fucking:
http://en.wikipedia.org/wiki/Hubble_Ultra_Deep_Field

We live on the curved inner surface of spacetime.

I could explain you, but need to go sit on my computer for the "essay" , maybe tomorrow