Question

Does vacuum affect gravitational force?

Answer 1

All the planet in our solar system are in space. Still they are rotating around sun because of gravitational force of sun. Same our astronauts' are rotating around earth due to gravity. And they feel weight-less or they feel zerogravity because of a counter forceacting on that body I.e.

Answer 2

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Gravity acts on particle with mass. Space, ieVacuum, does not have massive particle.