The University of Arizona’s Steward Observatory Mirror Lab is pre-firing its huge spinning furnace and inspecting tons of glass for casting a first 8.4-meter (27-foot) diameter mirror for the Giant ...

April 15, 2011, 1:46 PM UTC / Source: GlobeNewswire REDONDO BEACH, Calif., April 15, 2011 (GLOBE NEWSWIRE) -- Today marks a significant milestone for NASA's James Webb Space Telescope mirror test ...

Engineers commanded the James Webb Space Telescope to unfurl its over 21-foot wide golden mirrors this week, and the crucial test succeeded. The test, shown in the image below, was the last check on ...

The James Webb Space Telescope hit another milestone this week; NASA announced that the $10 billion observatory's 18 hexagonal mirror segments and its secondary mirror have been fully deployed. "Just ...

HUNTSVILLE, Ala. – Recently, six James Webb Space Telescope beryllium mirror segments completed a series of cryogenic tests at the X-ray & Cryogenic Facility at NASA’s Marshall Space Flight Center in ...

NASA has reached a milestone in the development of its newest telescope, Roman, set to launch in 2025, with the completion of its primary mirror. To look at into the depths of space, Roman needs a ...

I'm often asked to recommend a telescope, especially around the holidays, when gift-giving is on our minds. Today I'll share a few suggestions, but before we talk specifics, let's look at the ...