Yes it is. To be more accurate, it's expanding.
Gravity
no
Most objects in outer space are moving under the gravitational attraction of other galaxies or galactic clusters. The attractive force speeds them up rather than slows them down.
Usually not. To slow a moving object down, some force must act on the moving object. On Earth, this force is usually friction. In outer space, there is no significant amount of friction, so moving objects tend to continue moving, unless they are slowed down by OTHER forces, such as gravity.
Inertia
outer (as in "outer space")
There is no antonym for outer space.
outer (as in "outer space")
they built it in outer space
In Outer Space was created in 1983.
Tagalog Translation of OUTER SPACE: sa kabilang daigdig
Man in Outer Space was created in 1961.