Chips of Pallas grace meteorite collections around the world. See where they all came from when the asteroid reaches opposition this spring.
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.
"One Ring to rule them all." Join me as we explore a unique class of galaxies forged in the chaos of collision.
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. During fall, the evening...
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.
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.
Sky & Telescope predicts that 2015's best meteor showers will be the Perseids in mid-August and the Geminids in mid-December.
Fooled by shadow play into thinking lunar mountains were pointy pinnacles? Learn why we often see them that way.
Watch an asteroid approach a star and block its light, all in a fraction of a second.
Lonely Fomalhaut turns out to have plenty of company. Learn how to find its two remarkably distant stellar companions.
Learn exactly how and when to expect the next display of the northern lights with a few easy-to-use online tools.
Get acquainted with SS Cygni, the sky's brightest cataclysmic variable star. It's guaranteed to keep you on your toes.
With a subtle beauty all its own, the earthshine we see glowing in the lunar night invites us to consider Earth's many connections to the Moon.
You'll be entering uncharted territory when you seek out this little known 'Shadow of the Veil' in Cygnus this summer.
The next time you're out watching a sunset, turn around and relish the mighty shadow of Earth looming just behind your back.
Fascinating faculae provide a way for anyone with a small telescope to track the ups and downs of the solar cycle — even when there are no sunspots.
Channel your inner superpower by looking up at the night sky precisely when a dazzling blaze of light is beamed to Earth from outer space.
Not every set of closely paired stars requires binoculars or a telescope to "split". Here's a guide to summertime doubles you can tackle with your eyes alone.
Two bright asteroids now appear extremely close to one another in the evening sky. Here's how to spot them in binoculars or a small telescope.
Your first view of Saturn with a telescope can introduce you to the riches of stargazing — and now is the perfect time to observe it. Saturn is entering the early evening sky this spring just as Jupiter begins its exit in the west. Here's a quick guide to spotting the ringed planet by...
Astronomers don't know why Jupiter's iconic Great Red Spot has been gradually shrinking since the 1800s — or why the downsizing has accelerated during the past two years. Update: On May 15th, NASA released newly taken images of the Great Red Spot (at bottom below) to show its declining size since 1995. Thanks to...
Uranus and Neptune are easy to find with the aid of the charts in this article.
This star-studded pool of misty light provides a feast for observers.
Explore the Moon with binoculars or a telescope.