“A lot of people doubted that these materials could ever be strong enough to deal with the harsh environment of space,” McMillon-Brown said. “Not only do they survive, but in some ways, they thrived.”

https://www.nasa.gov/feature/glenn/2023/10-month-voyage-proves-solar-cell-material-survives-thrives-in-space

“We didn’t know when we sent it exactly what to expect,” McMillon-Brown said. “It was kind of like opening a door and not knowing what is going to be on the other side.”