Astronauts aboard the International Space Station have powered on NASA’s newly upgraded Cold Atom Lab. The facility, often described as “chilly,” is designed to enable scientists to study fundamental properties of matter and advance quantum technologies. NASA says the Cold Atom Lab uses a microgravity environment to support experiments that are difficult or impossible to perform on Earth, allowing researchers to work with ultra-cold atoms and explore quantum behaviors under conditions provided by space. Phys.org similarly reports that the lab has been switched on and emphasizes that it is a one-of-a-kind capability aboard the ISS. Both sources frame the upgrade as an improvement to an existing research instrument rather than a new station experiment, positioning it to broaden what scientists can test in quantum physics while taking advantage of microgravity. The activation marks the start of use of the upgraded system for ongoing and future research involving quantum matter.