Comet

 

M27: Not a Comet

While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets.

The Perseids and the Plough

Despite interfering moonlight, many denizens of planet Earth were able to watch this year's Perseid meteor shower.

Perseid Meteors over Slovakia

Tonight is a good night to see meteors.

Zodiacal Road

What's that strange light down the road?

Virtual Flight over Asteroid Vesta

What would it be like to fly over the asteroid Vesta?

Astronomy Picture of the Day: Messier 2

After the Crab Nebula, M1, this giant star cluster is the second entry in 18th century astronomer Charles Messier's famous list of things that are not comets.

Astronomy Picture of the Day: A Cold December Night

They say Orion always comes up sideways, and he does seem to on this cold December night. The bright stars of the familiar northern winter constellation lie just above the snowy tree tops surrounding a cozy cottage near the town of Ustupky in the Cze

Astronomy Picture of the Day: A Cold December Night

They say Orion always comes up sideways, and he does seem to on this cold December night. The bright stars of the familiar northern winter constellation lie just above the snowy tree tops surrounding a cozy cottage near the town of Ustupky in the Cze

Astronomy Picture of the Day: A Cold December Night

They say Orion always comes up sideways, and he does seem to on this cold December night. The bright stars of the familiar northern winter constellation lie just above the snowy tree tops surrounding a cozy cottage near the town of Ustupky in the Cze

Astronomy Picture of the Day: Red Nebula, Green Comet, Blue Stars

This festively colored skyscape was captured in the early morning hours of December 17, following Comet Wirtanen's closest approach to planet Earth. The comet was just visible to the eye.

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