Future GRACE / LISA satellite experiment as alternative for the Michelson Morley etherwind experiment, reduced by Earth lightspeed frame dragging of the Local Asymmetric Oscillating vacuum Frame (LASOF) according to Q-FFF theory.
Observing Up and down differences of the light speed between two Grace satellites by earth motion around the sun.
As alternative for Michelson Morley experiment.
No lightspeed differences should be measured to or from the earth direction due to gravity drag effect.
see also: https://www.researchgate.net/publication/320757724_Alternative_Michelson_and_Morley_experiment_between_two_satellites_Grace
Even the Lisa pathfinder could find siignals for the LASOF lightspeed frame dragging of the earth?
See also: Experiments to determine the mass related Lightspeed extinction volume around the Earth and around spinning objects in the Lab
"According to Einstein’s relativity theory, is the speed of light for every observer the same in
all reference frames.
However, there seem to be incidental differences in the lightspeed if we observe the outliers
of GPS satellite to CHAMP satellite distance measurements of 180m. see image (by Tae Suk Bae, Ohio State univ.2003.)
At the same time in the literature I found tiny structural but characteristic unexplained
irregularities in Planetary radar-pulse reflection measurements, made by I.I. Shapiro in 1964,
between the Earth and Venus." ( see “radar astronomy” edition by Evans and Hagfors, 1964)
Experiments to determine the mass related Lightspeed extinction volume around the Earth and around spinning objects in the Lab
The O‘Connell effect in eclipsing binaries explained by mass related light speed extinction distances (LASOF) of stars and even planets.
Reconciliation of GR and QM by a New Gravity-Black Hole and Lightspeed Model Called Quantum- FFF Theory
The Semi Relativistic Higgs Field Aether with Mass Related Lightspeed Adaptation
Experiments to Determine the Mass Related Lightspeed Extinction Volume.