Mostly used to help older people read ... Building a better refractor The spyglass-turned-telescope had limitations, some of which Galileo was able to design around. To reduce distortions such ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

To create the first photo of a black hole, scientists analysed signals from some 55 million light-years away that crossed intergalactic space to reach an array of telescopes spanning the globe ...

Telescopes are devices used to observe the universe. There are many different types and some are even sited in space. Optical telescopes close optical telescopeA device used to see distant objects ...