Space: the Final Frontier
Just how big is the Universe? The Hubble telescope helped us find out…
Some more space resources:
YourSky – excellent star map that lets you control many variables and print.
Stardate – a collection of excellent resources for stargazers, students and teachers (including how old/heavy am I on other planets?)
Lots of good FAQs from Stardate
Deepsky2003 starmap plotting software