The past quarter of a century in astronomy has been dominated by large telescopes — but they are about to be usurped by some even larger ones. When you purchase through links on our site, we may earn ...

He tried to make a working telescope from scratch, but clear glass kept failing and the first lenses came out flawed. Using recycled glass, a rebuilt kiln, and hand-ground optics, he pushed through ...

Translation of: La construction du télescope d'amateur. Newtonian telescopes--Design and construction--Amateurs' manuals Cassegrainian telescopes--Design and construction--Amateurs' manuals ...

When you look at the night sky, do you ever wonder what's going on out there? On a clear night with a dark sky, if moonlight doesn't wash it out, sometimes you can see the arc of the Milky Way. The ...

Advances in quantum technology might allow astronomers to circumvent age-old issues that limit the size of optical observatories ...