Space Shuttle Challenger

Anyone who sits on top of the largest hydrogen-oxygen fueled system in the world, knowing they’re going to light the bottom, and doesn’t get a little worried, does not fully understand the situation. — John Young, after being asked if he was nervous about making the first Space Shuttle flight in 1981. Sadly prophetic. The image…

Two possibilities exist:

either we are alone in the Universe or we are not. Both are equally terrifying.
— Arthur C. Clarke