NASA Research Assumes Flat, Non-Rotating Earth
The following report was published at the NASA Ames Research Center, Dryden Flight research facility, on January 8th 1987.
Assumptions are made in science all of the time. Assuming the earth is flat and non-rotating is one of them.
In this report, Eugene L. Duke, Robert F. Antoniewicz, and Keith D. Krambeer have it written black on white that their calculations are only valid on a flat, non-rotating earth.
The "assumptions" are only for the benefit of the brainwashed scientist. True scientists know exactly what is going on.
Food for thought. Bon apathy.
https://archive.org/details/FlatEarthNASAReferencePublication1207-1988