The greatest heroes across the DC Universe unite in this collection featuring the best spacefaring stories of Justice League Unlimited, the comic book series inspired by the beloved animated series of the same name! These stories feature sci-fi adventures starring Green Lantern, Martian Manhunter, Adam Strange, Sinestro, Space Cabbie, and more! Collects Justice League Unlimited #4, #6, #18, #24, #34, and #46.