NASA should set moon time – “The clocks run faster on the moon”. “That's one of the beauties of fundamental physics - crazy things happen," says astronomer Catherine Heymans.

The project is important because "knowledge of time...is fundamental to the scientific discovery, economic development and international cooperation that form the basis of U.S. leadership in space," says a White House memo. The goal of NASA's Artemis lunar program is to send astronauts to the moon for the first time in 50 years.