Calling all imagers! Three comets will make close flybys of Earth over the next two years. Join a new pro-am effort to make the most of this rare triple play.
The normally faint quasar CTA 102, once thought to harbor an advanced civilization and made famous in a 1967 song by the Byrds, is currently bright enough to see in an 8-inch telescope. In the history of SETI, the Search for Extraterrestrial Intelligence, there have been two great false alarms. The first occurred in 1963…
With our eyes often glued to the bright classical planets, Uranus is easy to overlook. Now well-placed for viewing at a convenient hour, why not pay this pale blue dot a visit the next clear night?
You won't want to miss the biggest, brightest full Moon in more than 68 years. Find out what makes this supermoon so special and how best to view it.
Did you know that the brightest part of the Merope Nebula in the Pleiades is also the hardest to see? We'll make sense of this seeming contradiction while honing key observing skills.
While the kids are gathering sweet treats this Halloween, get a celestial scare with these frightful deep-sky sights.
A nova in Sagittarius, discovered a few nights ago by a Japanese amateur, has become bright enough to see in binoculars. Update: As of October 31st, the nova had been holding at about magnitude 8.0 for a week. It's temporarily designated TCP J18102829-2729590. This is not to be confused with another nova just above the…
Keep your eye on the northern sky. Auroras are in the forecast for the next couple nights courtesy of a "hole" in the Sun's corona. Update (October 25th): Since early this morning, a stronger than expected blast of solar wind has been ruffling Earth's magnetic field and stoking a strong geomagnetic storm. We're currently experiencing a G3 /…
The annual Orionid meteor shower is active all week, peaking Friday morning October 21st. If you're up before dawn, you might just see these Halley's Comet castoffs come to life.
The famous variable star Delta Cephei unlocks a box deep-sky treasures in a little-visited corner of Cepheus, the King.
At 2.5 million light-years away, you might think it's impossible to see individual stars in the Andromeda Galaxy. Let its largest star cloud, NGC 206, show you the way.
Early risers get a triple treat this week and next: a ravishing dawn Moon, an excellent apparition of Mercury, and a hint of Halloween in the ghostly zodiacal light.
A stunning double star, Albireo is also a bit of an enigma. Is it a true binary or the result of a chance alignment?
In an age when UFO sightings are rife, we look at other possibilities that may help to explain the strange apparitions many see.
With this week's waxing Moon, we set off to explore its volcanic past with a look at a dozen intriguing lunar domes.
Throw open the door and welcome back Orion at dawn. The Hunter's return brings relief from the heat and gives us a fresh shot at exploring untouched winter deep-sky objects in comfort.
Bees see polarized light and use it to navigate to honey. Learn how you can use it to crack the Egg Nebula.
The intriguing Palomar globular clusters will challenge observers with modest to large telescopes, while providing a satisfying ramble around the galactic halo.
Make a connection to a time when stars were used to track seasons and predict natural events by watching the heliacal rising of Sirius.
An otherwise faint and distant periodic comet underwent a bright outburst at the end of last month. Now it's visible in amateur telescopes at nightfall.
The meteors are coming! Three annual meteor showers are already active and guaranteed to spark up your summer nights.
Now you see 'em, now you don't. Watch the Moon occult Neptune and nearby Lambda Aquarii on the same night.
Take an imaginary journey in a boat down the Milky Way's Great Rift, exploring rich star clouds and dark nebulae along the way.
A survey of free services and apps that let you keep tabs on space weather so you can anticipate the next great aurora.
Late June offers a grab bag of clusters and nebulae "lined up" at the midnight hour. Time your southern deep-sky viewing with meridian passage and you'll be a happy camper.