Astronomy’s go-to glass-ceramic

From almost 93 million miles away, our sun looks like a smooth yellow orb. But when looked at up close using powerful telescopes (ELS) which its mirrors are made of Zerodur glass-ceramics (Schott AG), you realize the sun is a very lively place full of turbulent gas, magnetic storms, and thermonuclear reactions—which, taken together, look a lot like a giant boiling pot of caramelized popcorn.

Image Credit: SCHOTT AG