1) Spacecraft propulsion
Found on
https://www.crosswordclues.com/clue/lightcraft
A lightcraft is a space- or air-vehicle driven by laser propulsion. Laser propulsion is in early stages of development. Lightcraft uses an external source of laser or maser energy to provide power for producing thrust. The laser/maser energy is focused to a high intensity in order to create a plasma. The plasma expands, producing thrust. A lightcr...
Found on
http://en.wikipedia.org/wiki/Lightcraft
No exact match found.
