Ted Kennedy states "It's a done deal" when Nixon said he didn't want the President's pardon. The 1833 Supreme Court case United States v. Wilson set the precedent that a pardon can be rejected by the recipient and, in order to be recognized by the courts, must be accepted by the recipient. As such, Nixon could've declined Ted Kennedy's pardon.
The astronauts on the Moon base look the same as they used to on Earth. When a human experiences zero or low gravity for a prolonged time, their body changes. Their faces get puffed, their eyes pop out a little, and overall they look a bit inflated. Nothing like that can be seen on these astronauts.
When NASA names a new flight director, their flight team is given a new designation even if most of the positions are inherited from a previous team. Gene Kranz's "White Flight" designation was retired when he was promoted to Deputy Director of NASA Mission Operations.
The Equal Rights Amendment would need 38 states for approval, not 37.
Margo gives the girl a slide rule in 1974. Texas Instruments had introduced the SR50 scientific calculator the year before.
When Baldwin drops his headphones after the video call with Karen, it lands as fast as it would on Earth. On the Moon it would've taken a little bit longer for it to fall on the desk.
Shane Baldwin and Jimmy Stevens are working on their Cub Scout pinewood derby cars at the Baldwins' kitchen table in 1974. They both are wearing the Oscar De La Renta-designed Boy Scout uniforms which were introduced in 1980.