Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Overview, somewhat lacking in personalities.

This is an excellent broad scope look at the history of rocketry and how that led to spaceflight, along with the sometime practical and sometime cynical political decisions that led to spaceflight.My only real complaint was that there was an overwhelming number of names that were involved and Heppenheimer gives them all due mention, but I never got a sense for the real personalities of Korolev and von Braun or anyone else that really made things happen.Other than that minor flaw, I thought is was a greath history, and I came away with a new appreciation of spaceflight and the skill and expertise that it takes to make a satellite or rocket work.