@Flashman I know of an amateur made game that you can print out called Orbital Battle by a guy named Mike Fisher. You download it from his own website for free.
It’s one of the space games. His site has over 20 home made strategy games.
It is not an exact gameplay copy of A&A as it uses a hex map and the defending units are only forced to retreat away from an attacker if the dice roll doesn’t roll high enough.
It is played on a solar system map 21 hexes across that has 8 planets on it that move on orbital paths each turn. Also, each planet has it’s own small ground map only 7 hexes across.