The four-person crew, led by cryptocurrency billionaire Chun Wang, will spend three to five days on a rare flight path around Earth’s poles.

SpaceX launched a crew of four private astronauts led by a crypto entrepreneur on a mission to orbit Earth over both North and South Poles, a new trajectory that no human has travelled before. The mission will last three to five days, during which the crew will conduct experiments on how spaceflight affects the human body.