World's Largest Reflecting Telescopes (Infographic) | Space
Giant Magellan Telescope will sport the world's largest mirrors
Observatory - Optics | NASA
Yerkes Observatory: Restoring the World's Largest Refracting Telescope - Grainger KnowHow
Inside the Universe Machine: The Webb Space Telescope's Staggering Vision - IEEE Spectrum
Telescopes: bigger is better – DW – 10/23/2015
Reflecting telescope - Wikipedia
NSF Grant Accelerates Development for One of World's Most Powerful Telescopes; Test Bed Being Built at UArizona | University of Arizona News
Hawaii's Mauna Kea gets world's largest optical telescope - Hawaii Magazine
The Astounding Engineering Behind the Giant Magellan Telescope | WIRED
Extremely Large Telescope: The Biggest Eye on the Sky | Space
First stone laid on the European Extremely Large Telescope
Yerkes Observatory is closing its doors
HQW Precision's bearings chosen for world's largest mid-infrared telescope - BEARING NEWS
A New Record Nears: The World's Largest Telescope Prepares For Completion
Extremely Large Telescope - Wikipedia
How to Choose A Telescope for Astronomy | Types of Telescopes - Sky & Telescope
World's largest optical telescope gets construction approval
TMT International Observatory
Telescope - Catadioptric Design, NGS-Palomar Observatory Sky Survey, Tower Solar Telescopes | Britannica
A cluster of thoughts: The largest optical telescope in the world
How do you build a mirror for one of the world's biggest telescopes?
