http://www.latimes.com/HOME/NEWS/SCIENCE/SCIENCE/t000073981.html
"Alive today is the first generation of scientists to interrogate the darkness. Conceivably it might also be the last generation before contact is made -- and this the last moment before we discover that someone in the darkness is calling out to us."
- Carl Sagan, Pale Blue Dot, 1994, page 352
http://www.seds.org/billa/psc/pbd.html
http://www.planetary.org/news/articlearchive/headlines/1999/headln-081799.html