Science: Weighing Moonlight

Though we speak of the noontide sun as "beating down" on our heads, it does nothing of the kind. Both sun and moon, when overhead, actually "pull up" on us, their gravitational action counteracting that of our own planet, so that our heads and all other earthly objects are physically lighter at high noon and under the moon's zenith than at other times.

This is elementary, but what Science must argue out with Dr. Einstein is whether or. not gravity is an instantaneous thing, operating at infinite speed. He says not. One proposition of...

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