Light is tricky stuff, and it took scientists hundreds of years to puzzle out what this stuff is. But they poked and prodded at it with many clever experiments to try to measure its speed, motion and interaction with the rest of the Universe. For example, the Fizeau Experiment, which ran light through moving water to see if that caused a difference.
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In line with that theme, here is another article of possible interest to readers:
“In Search of the Geometry of Space, Time, and Motion”
http://scripturalphysics.org/4v4a/ADVPROP.html#GeometrySpaceTimeMotion