Short Story Idea: Ionizing-Radiation-Human-Mutuants-From-Mars, Return To Invade The Earth

A short story idea came to mind when driving to work a couple of weeks ago while listening to a feature on NPR's Morning Edition - Are Humans Really Headed To Mars Any Time Soon?

Serial entrepreneur Elon Musk is focused on settling Mars, and has the vision and money to invest in new technology to support mass immigration from Earth to our neighbor planet.
 
In relatively near time, earth people mass migrate to Mars in people movers produced by Musk's ventures.

Precautions were taken to protect the travelers, but the dangers of radiation exposure were not completely realized.

Radiation-induced mutation is initiated while people cross space between Earth and Mars.

Slowly the exposed human population experiences genetic shift that occurs on Mars by the emigrants as they procreate.

Over time, the human population of mutants evolves into creatures different than Earth people that remain behind.

In the future, the Mars mutant population invades Earth with violent results that were unimagined at the time of the earlier first wave of migrants from Earth.

Use these story lines to re-connect to the origins of invader/invasion stories such as War of the World, Alien, and other. It would be more exciting than those television series that link different fairy tales or Disney stories together.

                                                                                                                                          © J.J. Steiner, 2015 
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(1) NASA paper on protecting space travelers found here.