Explain to me the phsyics of this cover, well-designed as though it may be.
The Story: "The Bridge Between Earths!" by Gardner Fox, Mike Sekowsky, and Sid Greene. It turns out all this Earth-One/Earth-Two hugger mugger is because of an experimental space-warping machine(!) that Ray Palmer's assistant has been working on! Dammit, if Ray didn't have to spend so much time at home with that nag Jean Loring, he'd have been on top of this!
The JLA and the JSA team-up to help defeat the (really cool looking)Anti-Matter Man who was using the effects of the machine to further his nefarious plan.
Roll Call: Batman, Flash, Green Lantern, Hawkman, Atom
Notable Moments: As stated above, I love this cover--the design, the colors, all top-notch and exciting.
The Atom plays a huge role in this story, so Damian ought to be happy.