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

Reflector telescopes are well-loved by amateur astronomers ... Refractor telescopes are intuitive to use and easy to set up, so they are popular with novice astronomers. They are also relatively ...

Extraordinary footage showed two NASA astronauts as they completed X-ray telescope repairs outside the International Space Station on Thursday.NASA livestreamed the spacewalk, which began at 8 am ET ...

From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for ...

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

The spacewalks are part of NASA’s ongoing efforts to upgrade and maintain the International Space Station (ISS).

Image source: NASA The NASA Roman Space Telescope, scheduled for launch in 2027, is a next-generation space observatory that will be used to complement and outdo the James Webb Space Telescope (JWST).

Suni Williams steps outside the International Space Station for the first time since arriving in June on Boeing’s Starliner.

Nasa astronaut Suni Williams, one of two astronauts stuck on the International Space Station, has completed her first ...

Suni Williams wasn’t planning to participate in a spacewalk when she arrived aboard the International Space Station last year ...