Just how powerful is the world's most powerful telescope? Let's start with the human eye. The human eye has an angular resolution of about 1 arcminute. That's pretty impressive. Take a circle ...

The Hubble Space Telescope marks its 35th anniversary with a stunning new image of the Sombrero Galaxy. This detailed view reveals the galaxy's structure, including its bright bulge and dusty disc.

Telescopes are fun to point around the sky, but they’re even better when you have some idea of what you’re actually looking at. Experienced sky-gazers love nothing more than whipping out some ...

Construction of the world's largest telescope has reached its highest point with assembly of the roof's dome and large sliding doors that will shield the observatory. The European Southern ...

"It's amazing that after 35 years, Hubble still holds a unique capability as a top workhorse for science discoveries and publications." This Thursday (April 24), the Hubble Space Telescope ...

The world's most famous telescope is celebrating in style with new views of Mars, nebulas and a galaxy that reminds us of home. Freelance writer Amanda C. Kooser covers gadgets and tech news with ...

Welcome to the Tuesday Telescope. There is a little too much darkness in this world and not enough light—a little too much pseudoscience and not enough science. We’ll let other publications ...

But the latest budget proposal, if approved by Congress, could be a death knell for the already-constructed space telescope. "This is nuts," Simons Foundation president and former co-chair of ...

How can you fairly compare one telescope to another? It's all in the (angular) resolution. The entire point of introducing telescopes into astronomy is to make distant things more visible.

This book summarizes the science to be carried out by the upcoming Cherenkov Telescope Array, a major ground-based gamma-ray observatory that will be constructed over the next six to eight years. The ...