If the ghosts are of ded contemporary physicists they’re probably haunting the region of space that our solar system occupied in the galaxy when they died.
Depends what reference frame they died in. If it’s inertial, they’ll be in an orbit, and will spend most of their time falling through the Earth’s deep interior. Occasionally, they’ll surface.
If the ghosts are of ded contemporary physicists they’re probably haunting the region of space that our solar system occupied in the galaxy when they died.
So mostly floating in space
Moon’s haunted
Depends what reference frame they died in. If it’s inertial, they’ll be in an orbit, and will spend most of their time falling through the Earth’s deep interior. Occasionally, they’ll surface.
Moral: Don’t be a physicist.