  During the years 2009 to 2011, neutrino beams were fired repeatedly from CERN
towards a detector in Italy's Gran Sasso tunnel, some 4 deg south and 7 deg
east of CERN, at a distance of 730.5 km, in the shape of short bunches of
particles. Their time of flight (2.5 msec) was measured at high accuracy (nsec)
with caesium clocks (Reich 2011). Remarkably, the CNGS team found a deficit of
61 nsec compared with propagation at the speed of light, and concluded at
superluminal speeds, of order 10$^{-4.6}$. In this communication, I will argue
that this is the first experiment to test Einstein's theory for the (weak)
gravity field of Earth, with the result that the neutrinos propagated (just)
luminally.

General Physics