It’s considered to be the world's largest mirror ever built for an optical telescope at a whopping 39.3 meters in diameter. ESO said the mirror will gather “tens of millions of times” more ...

This computer-assisted Celestron 114LCM is a great scope for beginners, and it's $80 off at Amazon this Black Friday.

NASA's Roman Space Telescope has received its Optical Telescope Assembly, paving the way for its mission to explore the ...

Scientists announced Thursday that they had taken the first zoomed-in image of a dying star beyond our galaxy. The star is ...

Giant Magellan Telescope The GMT is one of several large ground-based optical telescopes in development. Situated high and dry in Chile, it will have seven primary mirror segments, each over 26 ...

Earlier this year a simple indicator LED brought the Keck 1 telescope, a 370 tons mass, to a halting stop. How exactly did an LED do this? Simple: it did nothing. As it so happens, [Andrew Cooper ...

Boasting a massive 34-foot-wide (10.4-meter-wide) segmented mirror, the Gran Telescopio Canarias is currently the largest optical-infrared telescope in the world. The enormous telescope is perched ...

It is expected to be completed and begin operations in 2028, which will make it the world’s largest optical telescope.

Construction began Wednesday, Nov. 11 on what could become the world's largest optical telescope. The 22-story Giant Magellan Telescope (GMT), now being built in a desert atop a mountain in Chile ...

Discover how astronomers study distant galaxies, explore the role of dark energy over time and understand the expansion of the universe in a new exhibit featuring a scale model of the Hobby-Eberly ...