�? �? �? �? , �? , �? �? , �? , , , , , , �? �? �? , , �? , , , , �? , , , , , �? , , , , ,This needs to come about in order for the pace of light to stay constant. It's worthy of noting that Einstein's concept of common relativity, right after practically two hundreds of years, at last gave answer to Newton's bucket arg