Niven really knows how to emphasize the “science” in “science fiction.” Whether it’s the impact of our sun going nova [Inconstant Moon] or the realities of landing an astronaut on Venus [Becalmed in Hell] or the perils of a manned expedition to Pluto [Wait it Out] or the mind numbing complexities of the multiverse [All the Myriad Ways], this collection of sci-fi shorts has enough chutzpah to be completely plausible.