Where does this definition of space travel come from?
This entry for space travel is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is space travel a noun, verb, or something else?
In this entry, space travel is tagged as 2n..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.