As the universe expands, the atoms move farther apart; and so do the subatomic particles of the atom, so the distance between centers of two masses changes, so the gravitational attraction is reduced, so the apparent mass decreases, but due to higher geometries involved. the changes are not the same in all directions...but this also changes rotational and orbital speeds, which changes the centrifugal and centripetal forces, which...but...,which also implies that..., and then...,THEREFORE,...,if God so wills it.
You could’ve been on Star Trek... except for that last part.
I’m going to use that the next time I’m asked “Do I look fat in this?”