space travel
spa·cet·ra·vel
noun
1.
a voyage outside the Earth''s atmosphere
Related words
Broader terms
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
spa·cet·ra·vel
a voyage outside the Earth''s atmosphere
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.