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.
Want to see a star rock in real time? Observe the Sun in the crimson light of hydrogen alpha and watch it come alive.
How much can you see of the Andromeda Galaxy system with just a pair of binoculars? Turns out a lot!
Step by step, we explore the farthest things visible with the naked eye, from the most distant star to the hinterlands of the Andromeda Galaxy
Find out how two closely-orbiting stellar pairs create fireworks you can see in your own backyard telescope.
Neptune reaches opposition next week, giving amateurs the chance to track its unique, backwards-orbiting moon Triton.
Twilight. Gloaming. Dusk. Blue Hour — all names for that colorful and contemplative time between day and night. We explore twilight's brief but fascinating sights and learn why it gets shorter as summer turns to fall. Twilight takes us gently into that good night. I wouldn't mind spending time on the Moon, but I'd miss dusk and dawn. Many...
Northern hemisphere observers have this month and next to get their best look at Rosetta's comet, 67P/Churyumov-Gerasimenko.
We pay a visit to Ceres, now the apple of the Dawn Mission's eye, as it creeps through Sagittarius this month
Like "catching some rays"? This weekend's Blue Moon invites us to explore the beauty and dazzle of crater rays, the tracks left by powerful impacts in the not-so-distant past.
In search of a pitch black night? Don't expect to find it on Earth. Thanks to starlight, zodiacal light, and especially airglow, true darkness doesn't exist.
One of the smallest constellations in the sky hosts one of the richest concentrations of dark nebulae. Join me for a dip in these dark pools from which the next generation of stars will be born.
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.
July nights bring the green flicker of fireflies and a question — are there any green stars we can see in our telescopes? The answer may surprise you.
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.
Cobwebs of cosmic dust limit how far we can see into the Milky Way's hub, but Baade's Window offers a rare glimpse into the stellar riches that await us there.
Stars may appear static, but they're on the move. Put these two speed demons on your observing list this summer. When you return in a year or two, you'll be pleasantly surprised.
With Arcturus as our touchstone, we set off in a virtual time machine to visit the sky of the distant future.
Saturn reaches opposition this week, offering the best view of it we've had in years. This guide will help you explore the ringed planet's many charms.
Keep your eye on the prize in the western sky. Venus sets exceptionally late this month, presenting skywatchers with several unusual observing opportunities.
Chips of Pallas grace meteorite collections around the world. See where they all came from when the asteroid reaches opposition this spring.
Too tired to bring the scope out? Stuck looking at the same dozen deep sky objects? Here are a few ways to get that observing fire back in your belly.
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.
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.
Jupiter's four brightest moons continue to eclipse and occult one another, but time is running out. Only a few easy-to-see events remain between now and the end of the mutual events season.