space traveller n.

Twenty space-travelers could be taken care of at the same time.

The serious spot where absence of gravitation would cause trouble is in the semicircular canalds of the inner ear…. The space traveler would be too darned sick to run his machine.

The path taken by space travellers in a vessel will nullify gravity.

A space traveler would ultimately reach a zone of no weight or of practically none.

Cantrell has been removed from his job as chief space-explorer because of his insistence, thanks to a booby-trapped pyramid of strange design he found on Calypso during one of his previous space-flights, that some intelligent species, hostile to all other space-travelers and their worlds, has long been roving the star lanes.

A gnarled and knobby space-traveler…happened to be on World for a short stopover.

With almost nothing in the way of preamble, 6 Voyages begins with space traveller Sloane being chosen by a sentient throne and taken to the mad priests of a dormant diety.