An astronaut can hold a tool in space, loosen their fingers, and watch it stay put. Nothing drops. Nothing tugs downward. Yet the brain does not simply forget gravity because the body has left Earth.

Despite dozens of experiments over the years, scientists still don't have a precise measurement for gravity's strength. Why is that?

As a new commercial era of space exploration accelerates, scientists are considering the physical culture of outer space. Dancers are well positioned to help. Credit... Supported by By Margaret Fuhrer ...