OK read this and see how confused you are at the end of it !

http://news.bbc.co.uk/1/hi/sci/tech/3753115.stm

Worst bit is that "One implication of the new analysis is to prove false the idea that one could, theoretically, look in one direction and eventually see the back of your head." - used to love imagining how cool that would have been. Oh well, back to the drawing board....

yep!Very confused,had never heard that one about seeing the back of your head.

has anyone got stephen hawkins email address please.

Nah, it's simple really. To summarise, space is dead big! see, simple!