Webb sees shockwave continuing hundreds of years after supernova blast

Scientists have probed the remains of a star that died in a violent supernova and discovered that its shockwave continued reverberating through space, hundreds of years later.That shockwave eventually reached interstellar space, the medium that fills regions between stars. Researchers used the James Webb Space Telescope, a collaboration of NASA and its European and Canadian counterparts, to find that the ancient pulse, like a cosmic flashlight, had lit up never-before-seen details in the otherwi