Yes, it is.
Astronomers
outer (as in "outer space")
The most basic element we have discovered is hydrogen. If you are refering to matter. If not it is mostly photons.
The asteroid belt is between the inner and outer planets, but mostly it is just empty space.
they built it in outer space
There is no antonym for outer space.
outer (as in "outer space")
a microscope mostly used for to investigate stars and planets in the outer space
Are you crazy? No there are no farmers in outer space.
In Outer Space was created in 1983.
No they can not operate in outer space.