Researchers have long known that spinning spaceships like a merry-go-round could solve a lot of problems: In weightlessness, astronaut’s bones and muscles weaken. It’s tricky to eat and drink, and even use the bathroom. Inside a spinning spaceship, on the other hand, there would be an artificial gravity (due to centrifugal forces) that keeps bodies strong and makes everyday living easier. The problem is, spinning spaceships also come with a strong Coriolis effect. Tossed objects veer. Reach out to touch a button … and your finger lands in the wrong spot. Could astronauts adapt to this? And if so, could they adapt well enough to perform dependably in the life-threatening environment of space?