Question for the astrally informed:

Assuming a Sol-like system, say a planet like earth had been hollowed out, or had it's magma and core removed leaving just a shell.  Would the remainder's gravity be reduced on the surface?  Would it's gravitational pull be reduced?  Would the overall reduction of mass of the planet distort the orbits of other planets?

Had a discussion about the book Tides Of Light and Galactic Center Saga which brought up this question.

Thanks,

Darby