Collision Orbit

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Collision Orbit is a science fiction short story by Jack Williamson (credited as Will Stewart). It was published in the July 1942 edition of Astounding Science Fiction magazine.[1]

The concept of "terraforming", although it may have been previously used, is used in this short story for the first time.[2] It also uses the idea of anti-matter.[3]


  1. ^ "Jack Williamson". Symmetry Magazine. Retrieved 12 August 2014. 
  2. ^ "Science Fiction Citations: terraforming". Jesse Word. Retrieved 12 August 2014. 
  3. ^ "Collision Orbit". ISFDB. Retrieved 12 August 2014.