Ken RoyKen Roy is a retired professional engineer. His career involved working for various Department of Energy (DOE) contractors in the fields of Fire Protection and Nuclear Safety. As a long-time hobby he has been working with the idea of terraformng. He invented the “Shell Worlds” concept as a way to terraform planets and large moons well outside the star’s Goldilocks’ zone and under stars that have a radically different spectrum from that provided by our sun. Ken has authored multiple papers on terraforming and space colonization that have appeared in JBIS and Acta Astronautica. Read More Read Less