MixedThe Washington PostProviding ample detail of the players and programs and primary source material ... Interspersed with the chapters about UFOs are chapters about the largely unrelated searches for life in the universe: seeking alien radio signals, researching Mars’s habitability, understanding the initial appearance of water on Earth. Nothing in the evidence Graff provides connects the two faces of the book together. They simply sit side by side, separate hemispheres that Graff can’t quite weld into one orb.
