After watching Guardians of the Galaxy, check out these two sci-fi anthologies

Guardians of the Galaxy 2 arrives in theaters this week, and it promises to have the cosmic adventures, spaceships, and action that made its predecessor a surprising success. If you leave the theater wanting more, there are two new science fiction anthologies that you should consider picking up: Galactic Empires and Cosmic Powers.Space opera (defined by the Encyclopedia of Science Fiction as “colorful action-adventure stories of interplanetary or interstellar conflict”) is experienci