The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

Giant ground-based reflector telescopes do much of astronomy's heavy lifting, although the U.S.'s largest in Hawaii is not ...

Want to make the most of January's cosmic events, from Mars at opposition to the planetary parade? We've rounded up the best telescopes for all budgets and experience levels. The night sky can be ...

A Dobsonian mount is an alt-az type specifically made for Newtonian reflecting telescopes. The mount, which employs a swivel base and a cradle assembly to hold the telescope tube, has a simple ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

Two key inventions enabled astronomers to overcome the problem of chromatic aberration: the invention of the reflecting telescope described by James Gregory and built in a different form by Isaac ...

"The James Webb Space Telescope has been truly revolutionary- it is now hard to imagine what life was like without it!" ...

European Southern Observatory Director General Xavier Barcons told Space.com that astronomers expect the project to brighten ...

The instrument is the Prime Focus Spectrograph, and it is one of the flagship instruments in the next era of the Subaru ...

To see distant galaxies and fainter star clusters, time a trip around a new moon, when the night is at its darkest.