For the last couple years,Clarkesworld Magazine editor Neil Clarke has assembled what he feels are the best science fiction stories into aptly titled anthologies dubbed The Best Science Fiction Of The Year: Volume One, Volume Two, and Volume Three, with next year’s Volume Four already in the works. But he’s also, during that time, put together some collections that were more thematic but less time-sensitive. In the following email interview, Clarke discusses his latest of those, the space-centric collection The Final Frontier: Stories Of Exploring Space, Colonizing The Universe, And First Contact (paperback, Kindle).