An airplane began its journey across the Pacific on Thursday, June 18, with a rocket strapped to its belly. Inside that rocket was a rescue mission — a small robotic spacecraft that, later this month, ...

The Full Moon glows, Mercury stands still, and Venus blazes bright as it closes in on the heart of in Leo the Lion in the sky ...

Mercury and Jupiter are growing closer in the evening sky, but the former is also getting fainter and more challenging to ...

A delicate waxing crescent Moon creates an elongated triangle with bright planets Jupiter and Mercury in the evening sky.

The strange, two-toned moon Iapetus moves north of Saturn early this morning, offering an easy chance to spot it.

This broad, bright emission nebula near the tail end of Cygnus the Swan is great for night owls up after midnight.

The asteroid Lutetia is skimming past several bright stars in Scorpius, including two stunning doubles you won’t want to miss ...

This bluish, oval-shaped planetary nebula in the constellation Hercules is small but easy to spot, even in beginner scopes.

Astronomical summer begins as Mercury, Venus, and Jupiter dominate after sunset and deep-sky treasures shine in the sky this ...