Maybe Moontrap (1989)?
On July 20, 1969, during the last phase of the Apollo 11 mission to
the Moon, a robotic eye emerges from the lunar soil and takes notice
of the landing module as it takes off. The eye buries itself again.
Decades later the Space Shuttle Camelot encounters a derelict
spaceship in orbit around Earth. Mission commander Colonel Jason Grant
(Walter Koenig) leaves the shuttle to investigate. He discovers a
reddish-brown pod and a mummified human corpse. Both things are
brought back to Earth, where it is found that they originated on the
Moon some fourteen thousand years ago. Shortly thereafter, while being
unattended, the pod comes to life. It builds itself a cybernetic body
with parts from the lab and pieces of the ancient corpse. The cyborg
kills a lab technician and exchanges fire with security guards before
Grant destroys it with a shotgun blast to the head.
Using the last completed Apollo rocket, Grant and fellow astronaut Ray
Tanner (Bruce Campbell) go to the Moon on a search-and-destroy
mission. They discover the ruins of an ancient human civilization.
Inside, they find a woman in suspended animation who identifies
herself in a rudimentary fashion as Mera (Leigh Lombardi). Mera later
reveals the name of the killer cyborgs — the Kaalium. They survive the
attack of a spider Kaalium and return to the landing module, with Mera
wearing her own spacesuit but it turns out that the Kaalium have
stolen the module. The Kaalium also shoot down the command module,
leaving the astronauts stranded on the Moon. In subsequent attacks by
the Kaalium, Tanner is killed, Grant and Mera are taken prisoner, and
the Kaalium head to Earth.
Grant frees himself and rescues Mera from certain death at the hands
of a cyborg. In the meantime, the Space Shuttle Intrepid is launched
to intercept the approaching alien ship. Grant and Mera look for the
control room and find the landing module, which has been adapted into
the alien machinery. Grant supposes the module was the last piece of
equipment that the Kaalium needed to complete their ship. He starts
the module's self-destruct sequence and as they are attacked by a
Kaalium crew member, discovers that he can use his gun as a rocket to
get away. He and Mera exit through a breach in the hull. The ship
explodes after they have reached safe distance.
Some time later, Grant and Mera are shown as a couple living on Earth.
Mera, having learned to speak English, explains that she was put in
stasis to warn others about the Kaalium. Grant tells her that she does
not have to worry anymore, that it is over and hugs her. One of the
pods survived the explosion and is now in a junkyard preparing to
build itself a new body....
Football-like pod pics: