space tug
spacecraft vehicle designed to move the payload from a reference orbit to the target orbit, or direct it to an interplanetary trajectory
en-GB/ˈspeɪs ˈtʌɡ/
en-US/ˈspeɪs ˈtʌɡ/
spacecraft vehicle designed to move the payload from a reference orbit to the target orbit, or direct it to an interplanetary trajectory