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 ...

The leading explanation for each of these events is what’s known as a bit flip: an electronic glitch caused by radiation from space. Although uncommon, they can have significant consequences. And as ...

A robotic spacecraft headed to the Marshall Islands last week — the last stop on its way to rescue a 21-year-old NASA space ...

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

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

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

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

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

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

The Moon occults Venus in daylight, visible across the U.S. This evening, the Moon plows through the stars of the Beehive ...

Astronomical summer begins with a gorgeous lineup of lights in the evening sky, including three planets, two stars and the ...