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 ...

JWST and radio interferometry caught six massive galaxies colliding 12 billion years ago, while a young supermassive black ...

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 ...

Neptune is one of the most distant and mysterious planets in our Solar System, yet scientists continue making discoveries ...

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

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 ...

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

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

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