I think they want you to shoot the frigates, just use a bomber and keep bombing until they die. Or you can just skip the space mission.
"Everyone that posts here is aware of the game, thanks though." ET
Chad Dumeer, Deus Ex: "When government surveillance and intimidation is called "freedom from terrorism" or "liberation from crime", freedom and liberty have become words without meanings."
"Es lebe die Freiheit!"(Freedom lives)