Webb Telescope Discovered a Cosmic Dust Mill express
In the early universe, dust appeared in a flash—but how? Scientists found a quasar that acts like a cosmic mill, grinding large particles into the finest silicate dust. It explains where the raw material for growing dust grains came from—picture a galactic-scale sandstorm.
Using the James Webb telescope, astronomers peered into an ancient quasar—the dazzling heart of a galaxy where a giant black hole sucks in matter. It turns out it doesn't just destroy, but also creates: its powerful outflows and shock waves act like a true cosmic mill. They grind cosmic dust particles into the finest powder—just like ordinary sand, but pulverized to microscopic sizes.
And here's an unexpected twist: the telescope didn't spot the characteristic spectral feature that gives away carbon dust—which is almost everywhere. It seems this mill is selective: it only processes silicates, ignoring carbon.
🎯 The light from this quasar traveled 12.5 billion years to reach the telescope. We see it as it was just 1.3 billion years after the Big Bang.