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Letter (Astounding, February 1945): Sorry—the Idea Won't Work. Such Expelled Matter, Like Bullets Shot Straight Up, Would Fall Straight Back—or Escape to Infinity. The Matter Would Have to Be Radial, But No Orbital Velocity to Speak of.

John B. Platts

First published February 1945
Type Essay

Publications (1)

Date Publication Publisher Type Page
February 1945 Astounding Science Fiction, February 1945 Street & Smith Publications, Inc. MAGAZINE 128