Dark Specter's Revenge: Part 1 - S1-E29
Factual error: Bulk, Skull, and the Professor try to get in a Apollo Saturn V rocket to escape Earth. They head up the tower, and are seen getting into the ship via the thin pillar at the top - this pillar was used in case there was an emergency early on in the launch. Astronauts got into the ship in the Command Module, which was slightly lower down.
Crystal Blue Persuasion - S3-E15
Factual error: When Frank, Olga and he rest of the Back Step Team meet Commander (a Navy O-5 Rank) William Streck, he is dressed in a U.S. Air Force Uniform with the rank of Colonel (O-6).
Learning Curve: Part 1 - S1-E5
Factual error: When Pip is blasted back by the plasma jump, he is shown to rotate his body and slow down just before Silver Surfer reaches out and grabs him. Since he is in the vacuum of space, no amount of adjusting himself would help him slow down. He would continue to float perpetually until he bumped into something with more mass than himself or entered the atmosphere of a planet.