302K views · 6.3K reactions | The blue glow is called Cherenkov...

What’s that blue glow surrounding a reactor? It’s a phenomenon known as Cherenkov Radiation when electrically charged particles, such as protons or electrons, travel faster than light in a clear medium like water. | U.S. Department of Energy Office of Nuclear Energy

748K views · 11K reactions | Where does NASA's James Webb Space Telescope get its energy? From the #Sun! It uses a 20-foot solar array to convert sunlight to electricity, providing all the power the spacecraft needs to #UnfoldTheUniverse. Be on the lookout for Webb’s first images on July 12! | NASA Space Alerts | Facebook