The physics of Santa’s sleigh

The results, posted at, posit that Santa Claus is a brilliant engineer and physicist.

One of the professors, Dr. Larry Silverberg, said the students concluded that Santa has expanded Einstein’s theory of relativity to take advantage of “relativity clouds” that stretch time and bend the universe. “Relativity clouds are controllable domains — rips in time — that allow him months to deliver presents while only a few minutes pass on Earth,” he said.

The site reports that his sleigh must be an advanced aerodynamic design made of honeycombed titanium alloy, capable of altered shape in flight and yet stable enough for landings on steep roofs. Laser sensors would help select the fastest route, and a porous, nano-structured skin outfitted with a low-pressure system reduces drag up to 90%, Silverberg said.

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