Saving Proxima

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"The year is 2072. At the lunar farside radio observatory, an old-school radio broadcast is detected, similar to those broadcast on Earth in the 1940s, but in an unknown language, coming from an impossible source, and originating at an equally impossible location-Proxima Centauri. While the nations of Earth debate making first contact, they learn that the Proximans are facing an extinction-level disaster, forcing a decision: will Earth send a ship on a multiyear trip to provide aid? Interstellar travel is not easy, and by traveling at the speeds required to arrive before disaster strikes at Proxima, humans will learn firsthand the effects of Einstein's Special Relativity and be forced to ponder the ultimate of questions of "Are we alone in the universe?" and "What does it mean to be human?""-- Provided by publisher