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

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

As the seasons change, Venus shines bright, Neptune contrasts in color with a nearby star, and Mercury passes Spica in the sky this week.

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

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

Our satellite skims past the bright red giant star Antares at the heart of Scorpius. Check them out in the south after sunset.

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

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

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

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

Now in Cancer, our waning Moon hangs close to Jupiter. The gas giant is a great telescopic target, with cloud patterns and ...

ESA's Samba and Tango closed out the 26-year Cluster mission with two targeted reentries a day apart, giving airborne ...