William Optics’ newest machined aluminum refractor captures fine detail for imagers and its size makes it easily portable ...

Major survey results now hint that dark energy has evolved across cosmic history, raising questions about the standard model ...

The Dragonfly quadcopter will soar through Titan’s hazy skies and roam its dune seas in search of evidence that the distant ...

In its quest to chart the evolution of the universe, ESA’s space telescope has already amassed a massive catalog of galaxies ...

The Whirlpool Galaxy (M51) offers a chance to see a galaxy collision occurring in the sky. Here's how to view this ...

Although our universe is mostly normal matter, antimatter isn’t so hard to create — supernovae, black holes, and even bananas ...

View a brilliant morning star, enjoy dark skies during New Moon, and take in plenty of deep-sky targets in the sky this week.

Asteroid Donaldjohanson was the second destination on the NASA mission’s itinerary — and its size and shape were not what ...

About 2,600 light-years away, a dead star is sending signals from beyond the grave. Astronomers recently found the strange beacon, which appears to be a pulsar blinking in slow motion ...

In the 35 years since the Hubble Space Telescope flew to space, it has taken pictures of comets, merging galaxies, planets, supernova remnants, and more. The first-of-its-kind telescope — a ...