Onslaught from Rigel

“Mr. Pratt is well known for .… his excellent knowledge of warfare, and what a future war might be like. In this story he combines that knowledge with a vivid and fertile scientific imagination to construct an interplanetary story …. many scientists believe that life may originally have come to earth in the form of spores, from other solar systems and other universes. We therefore might really have had our home dim ages ago, on worlds distantly removed from our earth. The ability to travel the i