The Story: "The Lunar Invaders" by Marv Wolfman, Ross Andru, Rich Buckler, and Bob Smith. On the moon, a collection of astronauts from different countries are working on Moonbase Peace, a livable space colony being built there.
Suddenly, they and the base are attacked by...the JLA satellite?!?
Yes, the satellite starts firing missiles at the base, destroying most of it, leaving the astronauts diving for cover.
NASA sends a distress signal, and members of the JLA--who are home, on Earth--respond to the call and can't believe what they are being told:
The JLA is completely baffled, since the JLA's weapons are defensive weapons, and can't even be used to attack anyone or anything. Yet, it has happened, which makes the JLA confused and angry, none more so than the Atom, apparently:
Wonder Woman is the current chairperson, so she sends Superman and Batman to the moon to help out there, and the rest of them to the satellite to see what's going on up there!
They try to beam up there, but find the teleporters aren't working, so Green Lantern uses his Power Ring to transport them there.
They find the airlock doors sealed shut, but Red Tornado blasts his way in using his tornado powers (again, how exactly does Reddy do that in airless space?) and then the JLAers search the satellite for intruders.
Gas starts seeping in the air vents, almost knocking the heroes out until Reddy connects to the computer and has the gas sucked away.
Meanwhile, on the moon, Superman and Batman discover giant monsters, which threaten them. Superman tries to fight them, but finds he passes right through them! As Superman tries to engage them, Batman figures out what's going on.
Back at the satellite, the JLAers are attacked by other systems in the satellite. They easily defeat them, but it leaves parts of the satellite destroyed.
On the Moon, Batman tells Superman to use his X-ray vision to scan under the surface, where the monsters emanate from, and he discovers an underground city!
They find their way in, and discover two yellow-skinned aliens pointing ray guns at them. The same thing happens at the satellite, where the heroes find two more aliens in their main deck!
Turns out this race of aliens--called Orians--escaped their doomed planet and moved to the moon, and built giant underground cities. When the astronauts started inadvertently damaging their cities while building the moonbase, the Orians assumed it was an attack and used the nearest set of weapons--the ones at the JLA satellite--to defend themselves, but taking pains to only attack the machinery, not the people.
The JLA makes peace with the Orians, to the benefit of all:
Roll Call: Superman, Batman, Wonder Woman, Flash, Green Lantern, Atom, Red Tornado
Notable Moments: This is one of four book and cassette adventures made by Fisher-Price and released in 1982, the others starring Superman, Batman, and Wonder Woman. They run 61 pages, which is presumably why you have the penciling chores spread over two artists, Ross Andru and Rich Buckler.
They are printed on nice paper and in full-color, and with the use of DC stalwarts Buckler and Andru, this looks a lot like any other DC comic of the time, albeit one inside a hardcover.
They feature full-cast recordings on a single audio cassette, and you can listen to an mp3 file of this story here, something I fully suggest you do, JLA fans!