🚀 go-pugleaf

The most likely explanation is that the definition of neutral point has changed, perhaps
from a stationary geocentric frame of reference to a rotating  frams locked to Earth and
Moon, oir perhaps in some other way. In this, as in most other fields of science,
notations and definitions do change with time, and often vary between authors as well.

The incidental evidence that the Moon's surface gravity is roughly 1/6 of that of the
Earth is overwhelming, and that for the inverse-square law of gravity even more so.

Also, what would be the motivation of this supposd conspiracy?