Telescopes 4 inches or less in diameter are portable, easy to use, and great beginner instruments. Here, I’ll walk through ...

After 30 years of observing, I’ve compiled a list of some of my favorite deep-sky objects. These look best with a large ...

Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...

Overview A good telescope helps you enjoy the Moon, planets, and stars in much greater detail.Beginners should choose simple ...

A galaxy seen almost edge-on, wrapped in thick lanes of dust and glowing with unusually intense star formation, has long ...

The Very Large Telescope (VLT) and the Atacama Large Millimeter/submillimeter Array (ALMA) has captured a "violent cosmic ...

Astronomers truly live in a bold new era, where ground-breaking camera technology could change the way we understand the universe.

Juice observed 3I/ATLAS during perihelion, when Earth-based telescopes could not. Spectroscopic observations measured water ...

A radio telescope project known as the Deep Synoptic Array is moving forward. It aims to detect radio waves emitted by stars, ...

Gamma-ray burst GRB 260623A was detected by NASA’s Fermi telescope morning at 12:56 UTC Tuesday, triggering a global ...

Skygazers with binoculars and small telescopes may be able to spot it as a small point of light passing harmlessly through ...

A high-stakes mission to save NASA's Swift Observatory from a fiery end has relied on Arizona. Here's an inside look ahead of ...