The phrase "space travelers" refers to people or objects that venture or voyage through space, exploring and traveling beyond Earth's atmosphere. Full definition
Obviously, if a group of space travelers made nothing but smart, forward - thinking decisions, we probably wouldn't have very much of a movie. (decider.com)
Though admittedly in a way that may make any future space travelers think twice. (waytooindie.com)
Visitors — especially the first pioneering space travelers — won't arrive with anything waiting for them. (cnbc.com)