SUNSET: 
How To Get a Glimpse of Omega Centauri
Among globular clusters, the immense Omega Centauri is widely regarded as the most impressive in the sky. Its deep southern location makes this object challenging to spot — but it can be done, as Italian observer Giuseppe Pappa explains.
How Astronomers Count Sunspots
A multi-year investigation revealed errors in our understanding of the Sun.
It's Not Over Till The Fast Planet Sinks
This week and early next will be your last chance to see five planets — six if you count Earth — at dawn.
Tale of Capella and the Two Red Dwarfs
Bright Capella plays it close to the vest when it comes to companions, but with a good map and steady skies you can track down its dwarf binary.
Catalina Comet Sails Into Northern Skies
Comet Catalina returns this month with naked-eye potential. Follow its every move with our guide and maps.
Moon Hides Hyades, Occults Aldebaran Friday
After a late-night ramble through the Hyades cluster, the waning gibbous Moon will cover up the bright star Aldebaran for observers across North America Friday morning.
Observer's Guide to the H-alpha Sun
Want to see a star rock in real time? Observe the Sun in the crimson light of hydrogen alpha and watch it come alive.
Observing and Photographing Lunar Eclipses
Lunar eclipses are leisurely affairs — a pleasure to watch and photograph.
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.
Let's Get Serious About Ceres
We pay a visit to Ceres, now the apple of the Dawn Mission's eye, as it creeps through Sagittarius this month
Rayed Craters on the Moon
Like "catching some rays"? Explore the beauty and dazzle of crater rays, the tracks left by powerful impacts in the not-so-distant past.
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.
See Icarus Wing By Earth This Week
It's no myth. Icarus makes a rare flyby of Earth this week. Here's how to see it in your telescope and live online.
Do We Have Pieces of Pallas on Earth?
Chips of Pallas grace meteorite collections around the world. See where they all came from when the asteroid reaches opposition this spring.
How to See All Six Apollo Moon Landing Sites
Walk in the astronauts' footsteps as you explore the places they visited in the heyday of Apollo program. Use these helpful maps to start you on your way.
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.
One Small Order of Ring Galaxies, Please
"One Ring to rule them all." Join me as we explore a unique class of galaxies forged in the chaos of collision.
Crazy About Concentric Craters
With the Moon riding high this week, what better time to look for its three best-known yet enigmatic "ring" craters? We welcome back the waxing Moon this week. It's a chance for many of us to put dark-sky targets on the back burner and give some love to she who lights the night.…
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.
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.
