The spaces between stars in our galaxy are enigmatic realms filled with vast, diffuse clouds of gas and dust. These clouds tend to remain invisible — but the James Webb Space Telescope (JWST) has managed to capture one in a rare moment when it was lit up.
Peering at a dusty pocket of our galaxy about 11,000 light-years away in the constellation Cassiopeia, the James Webb Space Telescope's powerful infrared eyes watched as light from a centuries-old supernova illuminated interstellar material, warming it and causing it to glow.
