cramped, closed-in, smaller, stuffier
One synonym for astronomical observatories is "space observatories."
A synonym for empty space is "void." Other alternatives include "vacuum," "gap," or "emptiness," depending on the context in which you're using the term. Each of these words conveys the idea of an absence or lack of content in a given area.
A synonym for distant would be far and a burning ball of gas in space is a star.
cramped, closed-in, smaller, stuffier
Your weight is less on the moon b/c you have less gravity that pushes down on you in space--and in space there is no gravity,its a big vacuum and your mass is whats inside you.
AREA
work space
One synonym for astronomical observatories is "space observatories."
not more than
Lessened or become less intense or less widespread.
security, home, house, habitat, living space
Coat can't be an adjective, but you can say coat-less and things like that.
lower, secondary, underneath, minor, less
Words that mean "makes less wild" are tames or domesticates.
Strange, unfamiliar, unknown, foreign, extraterrestrial, creature from outer space, space invader or Martian.
It's the space between two musical or romantic arrangements! :)
The definition for the word distant is "existing or happening far away in space : separated by space."