A team of amateurs observers, some armed with just 3-inch telescopes, have found that the main-belt asteroid 113 Amalthea probably has a small companion.
Jupiter and Saturn are easy to spot in the evening sky, as you'll discover in July's fun and informative astronomy podcast.
Are astronomers being misled about a possible ninth planet by the quirky alignment of orbits that they’re finding in the distant Kuiper Belt?
On June 3rd, two dozen teams of observers in South America and South Africa tried to learn something about distant 2014 MU69, which New Horizons will visit in early 2019.
Just a mile across, a pair of moonlets found orbiting Jupiter bring the planet's total satellite count to 69.
A Moon-orbiting camera briefly shuddered — then got back to work — when it was hit by a tiny bit of space rock no bigger than a pinhead.
June's astronomy podcast takes you on a star- and planet-studded tour of the sky you'll see after sunset.
Want to take your eclipse-photography experience to the next level? Get tips on advanced techniques from Fred Espenak, a.k.a. "Mr. Eclipse," during S&T's live webinar on Tuesday, May 23rd. There are now just three months to go until August 21st's total eclipse of the Sun. And, like me, you're probably wondering how much time and…
Sky & Telescope's third tour to this astronomical paradise in South America wowed its participants day and night. Here's what they saw!
Listen to May's astronomy podcast to learn why stargazers think of the Big Dipper as the "Swiss Army Knife" of the late-spring northern sky.
As August 21st's awesome solar eclipse draws nearer, it's a great time to get valuable basic tips on how to photograph this spectacle — even with your smartphone — from Fred Espenak, a.k.a. "Mr. Eclipse," during S&T's live webinar on Tuesday, April 25th.
As you'll hear in this month's podcast, April is a time when it's easy to spot a lion, a sea serpent, and two bears in the evening sky.
The strange bright deposits inside Occator crater on Ceres are probably from cryovolcanic eruptions that are much younger than the crater itself.
In this month's easy-to-download podcast, find out how you can spot Venus in both the evening and predawn skies.Late in March, Mercury makes an appearance.
Clear skies prevailed across Patagonia in South America, providing intrepid eclipse-chasers with beautiful views of February 26th's annular solar eclipse.
Die-hard eclipse chasers have journeyed to the Southern Hemisphere to catch a short but dramatically thin "ring" eclipse of the Sun this weekend.
Don't miss the chance to see world-class observatories by day and the amazing southern sky by night during next month's astronomy and stargazing tour in Chile.
Download our monthly astronomy podcast to spot Venus and Mars in the west — and a celestial unicorn hiding in plain sight among the stars.
No matter what your level of interest in planetary exploration, you won't want to miss S&T's live webinar on Saturday, January 28th. Hear Alan Stern's personal take on how NASA's New Horizons spacecraft got to Pluto and what we learned once it got there.
New studies offer contrasting scenarios for making the Moon. One argues for a one big splat early in solar-system history; a second envisions a score of lesser blows that built up the Moon over time; and a third suggests water was involved.
It won't be a great year for lunar eclipses, with a deep penumbral event on February 11th and a partial on August 7th. But an annular solar eclipse is observable from the Southern Hemisphere on February 26th, and a total solar eclipse crosses the continental U.S. on August 21st.
When it comes to capturing a total solar eclipse, few can match the expertise of Fred Espenak. Get valuable tips from "Mr. Eclipse" himself during S&T's live webinar on Thursday, January 12th.
Everyone enjoys the brief and sometimes dazzling streaks of light from meteors, sometimes called "shooting stars." Sky & Telescope predicts that the two best meteor showers in 2017 will be the Quadrantids in early January and the Geminids in mid-December.
Download our monthly astronomy podcast to spot Venus and Mars in the west — and two star clusters high up — after sunset.
Thanks to some timely NSF support, the American Astronomical Society is offering dozens of small grants to U.S. groups that offer outreach programs tied to the 2017 s