UA optical scientists are set to begin almost two years of high-precision polishing and grinding work on a 4.3-meter mirror that will form the core of a $40 million Discovery Channel telescope near ...

In May 2022, the James Webb Space Telescope (JWST) encountered a problem. The giant observatory, perched 1 million miles from Earth, has a honeycomb-like configuration of mirror panels to see the ...

Mirrors are a critical part of any space telescope, and the James Webb Space Telescope’s mirrors are made of a special element that will enable it to withstand the rigors of space and see farther back ...

The Giant Magellan Telescope begins the four-year process to fabricate and polish its seventh and final primary mirror, the last required to complete the telescope’s 368 square meter light collecting ...

One Maunakea telescope has been partially removed, but the building that housed it will remain standing until next year. After months of delays, workers began taking apart CSO’s telescope in June, and ...

NASA has successfully installed the first of 18 flight mirrors onto the James Webb Space Telescope, beginning a critical piece of the observatory’s construction. In the clean room at NASA’s Goddard ...

An 11-foot-wide, 1,500-pound glass mirror, made by Corning Inc. and L3Harris Technologies, was recently installed onto the NSF-DEO Vera C. Rubin Observatory in Chile, providing the deepest views of ...

The Simonyi Survey Telescope now has its mirrors and a camera in place. (Credit: Rubin Observatory) The Vera C. Rubin Observatory’s 8.4-meter Simonyi Survey Telescope in Chile has now been equipped ...

In an early March test, engineers deployed the telescope's multi-segment mirror in its final configuration for the first time. It's quite a sight to behold, but we might have to wait longer than ...

At 8,040 feet above sea level (2,450 meters) in Uttarakhand, India, lies a prime site for astronomical observations — Devasthal, 31 (52 kilometers) miles east of the resort town Nainital. Surrounded ...

Mike Every knows about grinding glass—and he doesn’t like it. The second-year physics major from Saugerties, N.Y., is an amateur telescope maker with an idea for producing lightweight mirrors out of ...