"The Zodiac Crimes"
Joker ties Batman and Robin underneath a large mock-up of the solar system. There is an eight-tonne meteor in the centre above their heads, being held up by a thin rope. He then lights a thermite fuse that has been attached to Jupiter, and sets it spinning toward the rope, intending to crush our heroes with the meteor when the rope is burned through.
Batman is able to loosen one hand from his bonds, and retrieves a Batarang from his utility belt. He throws it at Jupiter, knocking the fuse down on them, perfectly placed to burn through their bonds.
Joker recruits Penguin to help him commit twelve crimes based on the zodiac signs.