Cryogenic

He wrote the article "Interstellar Voyages with Passengers in Cryogenic Suspension."

I want to be put into cryogenic sleep.

Cryogenic engines are rocket motors designed for fuels that have to be held at very low temperatures, and make it possible to launch heavy satellites into space.

The technology behind seed storage is impressive. Some seeds at the national seed storage lab might remain viable for 600 years. To show me how they could survive so long, Dr. Walters leads me to a room that's relatively warm, though it contains sealed tubs of liquid nitrogen that are 10 times chillier than the big cold storage room. She unseals a cryogenic tub, and when I reach inside, my hands feel surprisingly comfortable.

Quick as a mongoose, the man with the glass eye darts in, yanks the aluminum case out of the cryogenic cylinder, tosses it to Y.T.