The joys of observing variable stars are predictably wonderful. Learn about these inconstant stars which are consistently delightful.
Download the Celestial Harvest Showpiece Roster, a handy list of 300 of the best deep-sky objects to explore with telescopes from 2- to 14-inches in aperture.
Look northeast in the starry sky these evenings. Capella shines low and brightest. Upper right of Capella, and upper left of the Pleiades, the stars of Perseus stand astride the Milky Way.
See what cosmic dust can do! Head outside this weekend for the peak of the Orionid meteor shower and an eyeful of zodiacal light.
Want to become an amateur astronomer? First, learn your way around the constellations! They're the key to locating everything fainter and deeper to hunt with binoculars or a telescope.
An extraordinary encounter with the stars: the most peacefully (yet still stirringly) wondrous is the sight of a clear, dark sky filled with stars.
What's your pleasure when it comes to observing? Comets? Supernovae? Occultations? Get a sample of each and more in the upcoming week.
Some lunar impacts have characteristics that make them neither "simple" nor "complex." Think of them as the “young adults” of the Moon’s crater population.
R Aquarii may look like a normal pulsing red giant — but it has a lot more going on around it. Its next episode of weirdness may begin soon...
Want to become an amateur astronomer? Learn your way around the constellations! They're the key to locating everything fainter and deeper to hunt with binoculars or a telescope.
Be sure to set the alarm so you don't miss the squeaky-tight conjunction of Venus and Mars Thursday morning. They'll stay close through the weekend.
October's astronomy podcast helps you track down Saturn after sunset and offers a peek at what's in view before dawn.
Sky at a Glance, Friday, September 29 -- As the stars come out in late twilight, look high above the Moon for Altair.
What does the sky look like through a 36-inch telescope? I found out at Ohio's Hidden Hollow Star Party last week. Here's my report and a few observing targets to share.
During the author's May 2017 trip to Kefalonia he learned of an ancient eclipse on the neighboring island of Ithaca with ties to the Odyssey.
Can you spot September's Binocular Highlight from Mathew Wedel — spiral galaxy NGC 7331? Grab your binoculars and find a nice dark sky spot.
Friday, September 22 • Low in the west-southwest during twilight, spot the thin waxing crescent Moon. Can you see Jupiter to the lower right of it, by about 7°? (for North America.) • Equinox: Autumn begins in the Northern Hemisphere, and spring in the Southern Hemisphere, at 4:02 p.m. EDT. This is when the…
Dozens of satellites are busy day and night, beaming your favorite TV and radio programs from more than 35,000 miles away. Here's how to tune into them.
Create a custom, naked-eye map of the whole sky for any place on Earth, at any time of day or night, on any date from 1600 to 2400.
When do the Sun and Moon rise and set? When does twilight end and begin? Which planets are up? Start your night of observing with our Astronomical Almanac.
Saturn (magnitude +0.4, in Ophiuchus above Scorpius) glows in the south-southwest at dusk. Antares twinkles 13° to Saturn's lower right.
Learn the phase of the Moon tonight, the day you were born, or on any historical date.
The planets are aligning! The week ahead will feature multiple planetary conjunctions at dawn and great views of Neptune and Triton at nightfall.
Our new-and-improved interactive sky chart is here — create and print a customized view of your night sky for any date, time, and location.
Messier 17 (M17) has at least five proper names — Omega Nebula, Horseshoe Nebula, Checkmark Nebula, Swan Nebula, and the Lobster Nebula. Why so many?