There are Cracks in the Sky

The test flight of a new space ship and a high speed drive. Around the moon and back in 90 minutes. It's the fastest ship ever build and these astronauts get to go along for the ride. Every second of the flight will be recorded and every moment will be preserved for prosperity. That is, except for the four seconds they fall off the scopes and pass on the far side of the moon. Or was it five? Or was it six? Now they are back on Earth and their lots of questions to be answered about just what happened, where did they go, and why. This is closer in style to classic Twilight Zone episodes with more mystery and thinking going into it than action. It takes place in one room after the mission when they are swept from the craft and taken into a debriefing with no explanations as to why.