referring to travel in outer space

In an astronautic way.

A member of the crew of a spaceship or other spacecraft that travels beyond Earth's atmosphere, or someone trained to serve that purpose.

plural of astronaut

Navigation through space. / The science and technology of spaceflight.

Of or pertaining to astronautics.

Any of the extraterrestrial beings that, according to the pseudoscientific belief of paleocontact, visited Earth in the distant past, influencing human culture, technology, or religion.

plural of ancient astronaut

Ice cream that has had most of the water removed from it by a freeze-drying process and been sealed in a pouch, and requires no refrigeration.