looking for samples...

[NEMO.BOFH]

anyone that knows a good site to download lectures etc etc with people speaking about the universe and space?

[Reznik]

you can try here http://freesound.iua.upf.edu/ lots of samples to be found, contains search engine.

[Anakoluth]

i know one site filled with audio records on that matter, mostly scientific. but i've used them all already, so i won't give it to you. (read: i have lost the link )