Now is the best time to catch 145-mile-wide 3 Juno as it passes through a random collection of 9th- and 10th-magnitude stars.

Air Force Secretary Troy Meink's announcement is the first official U.S. acknowledgment of space-based weapons.

Three celestial objects form a triangle in the evening twilight as Venus and the crescent Moon hang with Virgo’s brightest ...

Dione crosses Saturn’s north pole, projecting its shadow onto the cloud tops as Tethys disappears into the planet’s shadow.

Europe's Vega C lifts a pair of Earth-observation satellites from French Guiana, China targets five launches, and Russia ...

Dark-sky sights take center stage as Saturn's moons dance and Venus mingles with the Moon in the sky this week.

The Red Planet stands a few degrees south of the bright star Pollux in Gemini, easily visible in the early-morning sky.

The young, bright open cluster NGC 7243 rides high in the sky late tonight, located in the zig-zagging constellation Lacerta.

HST celebrated its 36th birthday in space with a detailed look at the famous Trifid Nebula (M20), a dusty stellar nursery.

The Moon, Venus, Spica, and Mercury now all stand in a line tonight, but only if you’re quick — Mercury sets soon after the ...

Uncover various deep-sky objects you can see this fall using a large telescope, including the Bubble Nebula (NGC 7635), the ...

Reid Wiseman, Victor Glover and Jeremy Hansen will join Starmus VIII in Tenerife and La Palma, continuing a remarkable ...