SpaceX tourists return to Earth after a private trip that orbited the poles

Four space tourists who orbited the north and south poles returned to Earth on Friday, splashing down in the Pacific to end their privately funded polar tour.

Bitcoin investor Chun Wang chartered a SpaceX flight for himself and three others in a Dragon capsule that was outfitted with a domed window that provided 360-degree views of the polar caps and everything in between. Wang declined to say how much he paid for the 3 1/2-day trip.

The quartet, who rocketed from NASA’s Kennedy Space Center on Monday night...