The European Southern Observatory's (ESO) Extremely Large Telescope (ELT) — the world's largest visible- and infrared-light ...

Astronomers are sounding alarm bells as the world's most precious sky-observing location faces a risk of being blinded by ...

The magnificent Andromeda galaxy (Messier 31), stands out as the most important nearby stellar island to our Milky Way, and ...

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

Astronomers are raising concerns about the impact of light pollution from a renewable energy project on the world’s most ...

NASA's striking discovery in the universe. The agency's Transiting Exoplanet Survey Satellite (TESS) has discovered a planet ...

Chile's Atacama Desert is home to some of the best Earth-based observatories, though an energy company is throwing a wrench ...

Researchers and engineers have built a huge telescope on the Lower Rhine that will provide a view of the birth of the first ...

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

The Rubin Observatory will eventually hold the world's largest digital camera. It's therefore a good sign it has aced its ...

Lee Feinberg, HWO's principal architect based at Goddard, said in a separate presentation that NASA is currently envisioning ...

European Southern Observatory Director General Xavier Barcons told Space.com that astronomers expect the project to brighten the sky by up to 10 percent around the observatory.