SC, hope you caught THE INVADERS - I remember it being one of your favorites.
Good one on now, too: WILL THE REAL MARTIAN PLEASE STAND UP?
I loved that episode too. What I found weird was last night they must have had 8 straight hours of things involving "Astronauts" lol
Space exploration was a common theme in many episodes as was nuclear annihilation or the threat thereof. There is a pretty good episode coming up later tonight with Jack Klugman as an astronaut.