Two possibilities exist: Either we are alone in the Universe or we are not.
Both are equally terrifying.

— Arthur C. Clarke

A Guide to Outer Space Surveillance!

By kuky at Wed, 10/10/2012 - 11:21am

Pedro sent us an iteresting link for

A GUIDE TO OUTER SPACE SURVEILLANCEA Guide to Outer Space Surveillance!

Date : July-2012
Author: Lowell Bradford