Curious about machine learning? Learn about the inner workings of machine-learning algorithms without writing a line of code.
The November 2017 issue of Sky & Telescope explores our celestial neighbors both near and far. Learn about upcoming missions to Mars, and more!
Messier 17 (M17) has at least five proper names — Omega Nebula, Horseshoe Nebula, Checkmark Nebula, Swan Nebula, and the Lobster Nebula. Why so many?
Join renowned MIT researcher Sara Seager for a fascinating behind-the-scenes look at how we're readying the technology to find and study planets like Earth
Point your telescope towards these doubles — true gems of the late-summer sky. You don’t even need dark skies or a big telescope to admire them!
David Grinspoon shares his thoughts on being immortalized far out in the asteroid belt and his namesake, asteroid 22410 Grinspoon.
Contributing Editor Ted Forte offers a look at Hickson Compact Groups in the November 2017 issue of Sky & Telescope. In 1982, Canadian astronomer Paul Hickson published a list of 100 compact galaxy groups based on his examination of the Palomar Observatory Sky Survey (POSS) red plates. A compact group, as defined by Hickson, is…
Sky & Telescope Contributing Editor Ken Hewitt gives us a guided tour through Abell 194, a visually rich galaxy cluster in Cetus.
With a subscription to Sky & Telescope you'll always know what's coming next of astronomical note — and a whole lot more!
We strive to understand the universe as the universe itself ages. What will the solar system look like in 6.5 billion years? Is there a ninth planet? What is going on in the R Aquarii system?
A total solar eclipse offers the most spectacular of jewels, the diamond ring, as the Moon blocks all but a small part of the Sun's brilliance.
PURCHASE PRINT ISSUE | PURCHASE DIGITAL ISSUE | PURCHASE BACK ISSUES | SUBSCRIBE Tools of the Trade: Cassini's Saturn, LIGO's Detections, and Keeping Observing Logs Tools both advanced and simple are crucial to astronomy. Cassini spent thirteen years imaging and collecting other data at Saturn — see some of the stunning photos. LIGO is so…
If you want the best results from your eclipse photos, you'll need to do some processing. Equipment Editor Sean Walker walks us through processing photos from the 2010 Easter Island eclipse.
When limited time and a powerful on-shore wind scrapped the author’s plans for photographing the eclipse, he simply propped his telescope on a rock wall and hit the shutter button — with stunning results.
Sky & Telescope's Observing Editor offers a few suggestions to help you set up your first (for fifth!) observing notebook. Feeling inspired after reading Contributing Editor Bob King’s article on observing notebooks in the September 2017 issue of Sky & Telescope but need help starting a notebook? Here are a few different ways to approach…
No matter what you call it, Messier 17 is one deep-sky object to which you'll find yourself returning throughout your observing life. In our September 2017 issue, Contributing Editor Howard Banich examined the science and history of Messier 17, an H II region in Sagittarius also known as the Swan Nebula, Omega Nebula, Checkmark Nebula,…
Take 10 minutes with this article and become an eclipse expert for family and friends.
Explore the many "dark" phenomena in the world of astronomy in August's issue of Sky & Telescope: Learn how to photograph an eclipse, read the story of the "mother of dark matter", and find the doubles in Draco!
Learn about some of the asterisms in our night sky. From sharks to dogs, hats to rings, these night-sky patterns will have you seeking more.
If we ever try to live on the Moon, the best locations will be polar mountains bathed in nearly continuous sunlight.
Contributing Editor Matt Wedel offers more double and multiple stars to look for in and around the head of the constellation Draco, the Dragon.
Expand the limits of your own understanding of neutron stars, refractor telescopes, and observing in the July 2017 issue of Sky & Telescope.
Sky & Telescope's third tour to this astronomical paradise in South America wowed its participants day and night. Here's what they saw!
If you're looking for an observing challenge, George Abell's complete catalog of planetary nebulae has you covered. I observed my first planetary nebula by accident. I was moving the optical tube of my new telescope up and down, back and forth, nearing epic levels of frustration as I hunted for anything that didn't look like…
PURCHASE PRINT ISSUE | PURCHASE DIGITAL ISSUE | PURCHASE BACK ISSUES | SUBSCRIBE What is Tabby's Star? Who Discovered the Ring Nebula? Can Life Survive in TRAPPIST-1? Mysteries abound in astronomy, and not all the questions have answers — yet. Tabby's Star is emblematic of the search for truth. This seemingly ordinary star occasionally undergoes…