Certainly not, they revolve around a star and the star moves as well.
A fixed location in a space is called a fixed star.
If the planets did not move in their fixed orbits they may dash each other.
A fixed location in a space is called a fixed star.
If they aren't in space, then where else can they be?
Astronomy is all about the things in outer space and planets are in outer space.
The planets that have the most space between them are mercury and Pluto.
in space
By gravity
The space between planets is known as interplanetary space. It is mostly vacuum but can contain small amounts of particles and gases.
Astronomy is the renaissance that studies the planets. They study the planets and space.
in space
Space does not have an atmosphere. It is generally considered a vacuum. Planets and some moons have atmospheres.