Robert Roy Britt

A newfound comet has backyard skywatchers buzzing about its incredible brightness while also making itself very difficult to spot.

Astronomers have found evidence of a supermassive black hole at the heart of a dwarf elliptical galaxy about 54 million light-years away.

Astronomers might have seen the very first stars in the universe. If so, these are incredible stars, some 1,000 times as massive as the Sun.

The Geminid meteor shower, a reliable annual display, peaks tonight and into the pre-dawn. For skywatchers with dark, clear skies, this dazzling display should produce up to 120 meteors per hour.

A large sunspot that has been kicking up storms in recent days erupted again overnight with an X-3 solar flare. All X-flares are major.

A major flare on the Sun earlier this week generated a destructive shock wave.

A major X-9 flare erupted this morning. It emanated from a large sunspot, numbered 929, which is just coming into view around the eastern limb of the Sun.

Potentially dangerous small space rocks are smashing into the Moon a lot more often than was expected, according to an ongoing NASA study.

The Great Pluto War in Prague failed to forge an accepted definition, but it succeeded in alienating astronomers and deepening rifts along theoretical and national lines.

If your skies or cloudy or you're in the wrong location to enjoy peak activity, listen in on the shooting stars.

The ultimate resource primer on comets, meteors and more.

Animations show how meteors enter the atmosphere and why early morning is the best time to watch a meteor shower.

The annual Leonid meteor shower could produce a strong outburst this weekend for residents of the North America and Western Europe.

NASA's Cassini spacecraft has seen something never before seen on another planet -- a hurricane-like storm at Saturn's south pole with a well-developed eye, ringed by towering clouds.

A comet made a death plunge into the Sun on Friday, disintegrating as its icy chemicals vaporized on the way in.

What had been a modest comet seen only with binoculars or telescopes flared up this week to become visible to the naked eye.

Tonight's full Moon will be about 12 percent bigger than some of the full Moons this year, according to NASA.

The IAU proposed a new definition for planets that would have brought the the tally to 12. It was defeated.

New observations of a great big cosmic collision provide the best evidence yet that invisible and mysterious dark matter really does exist.