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Catalina Comet Sails Into Northern Skies

Comet Catalina returns this month with naked-eye potential. Follow its every move with our guide and maps.

Comet 67P/C-G


Rosetta's Comet Beckons At Dawn

Northern hemisphere observers have this month and next to get their best look at Rosetta's comet, 67P/Churyumov-Gerasimenko.

Roller-coaster ride south

Celestial News & Events

C/2014 Q1 (PanSTARRS): Next Naked-Eye Comet?

Comet C/2014 Q1 PanSTARRS has been skirting the northern horizon since mid-June. Now it's ready to dip Down Under, where it may be visible with the naked eye in evening twilight.

Astronomy and Stargazing Projects

Rosetta's Comet Campaign Wants YOU!

Participate in a world-wide campaign to observe and photograph Comet 67P/C-G as it approaches and recedes from the Sun with Rosetta in tow. Your observations matter.



Where to See Comet Lovejoy Tonight

The new Comet Lovejoy, C/2014 Q2, should brighten from 5th to 4th magnitude from late December through January as it climbs into excellent viewing position for the Northern Hemisphere, high in the dark winter sky.

Celestial Objects to Observe

Binocular Comet Lovejoy Heading Our Way

A new Comet Lovejoy, C/2014 Q2, is heading our way. It may brighten to 5th magnitude from late December through much of January as it climbs into excellent viewing position for the Northern Hemisphere, high in the dark winter sky.

Edgar Wilson Award plaque


The Edgar Wilson Award

Thanks to a generous bequest, each year amateur astronomers earn a beautiful plaque and a cash prize for discovering one or more comets.

Comet Sherrod


How to Report a Comet Discovery

So you think you’ve found a comet? Here are some steps to follow in verifying your find.

Comet Hale Bopp

Celestial Objects to Observe

Secrets of High-Power Comet Observing

Although large, bright comets are infrequent visitors to our skies, faint comets appear on a regular basis. Here are some observing hints that will make your comet-watching more enjoyable.

Celestial Objects to Observe

How to Estimate a Comet's Brightness

Comets are notorious for not following predictions, but even judging the magnitude of a bright comet that's right in front of you is not straightforward.


How Yuji Hyakutake Found His Comet

Ever wonder how somebody actually finds a comet, and what happens when he does? Here's one astronomer's story.