Search Result for "space travel":
Wordnet 3.0

NOUN (1)

1. a voyage outside the Earth's atmosphere;
[syn: spaceflight, space travel, spacefaring]


The Collaborative International Dictionary of English v.0.48:

Space travel \Space travel\, n. the process of travelling in or into outer space. [PJC]
WordNet (r) 3.0 (2006):

space travel n 1: a voyage outside the Earth's atmosphere [syn: spaceflight, space travel, spacefaring]