Future worlds described by science fiction visionaries like Philip K. Dick, William Gibson and Robert Heinlein often included wildly inventive methods of transportation to other planets, galaxies and dimensions.
These brief glimpses into the possible future of travel were left largely to the readers' imaginations, but a flourishing group of dreamers, designers and illustrators are bringing those creations to life -- at least online.
The conceptships.org website run by Igo Tkac showcases these artists' renditions of spaceships and other fantastical creations. From retro-futuristic aerial attack machines to automated deep-sea treasure hunters, here are some of the coolest.
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