SUNSET: 
A "Whodunit" of Cosmic Proportions
Most everyone credits Edwin Hubble with discovering that the universe is expanding. But historians believe the honor should really be shared with a lesser-known Belgian priest named Georges Lemaître. So what's the real story?
Videos about Sky & Telescope Magazine
Skywatch 2012 — A Preview
If you are wondering what's in the skies in 2012, Skywatch is just the magazine for you. This video is a preview of this year's issue. Skywatch is now available on newsstands in the U.S. and Canada.
Tune in for S&T's 70th Birthday Bash
Join the editors of Sky & Telescope on Thursday, October 20th, as we celebrate the magazine's 70th anniversary at the Harvard-Smithsonian Center for Astrophysics.
Past Meets Future at AAVSO's Centennial
Variable-star observers gathered to celebrate astronomy's most successful citizen-science organization. But old ways are ending, and a very different next century lies ahead for the AAVSO.
Three Cosmologists Share Nobel Prize
The Royal Swedish Academy of Sciences has awarded the 2011 Nobel Prize in Physics to (left to right) Saul Perlmutter, Brian Schmidt, and Adam Riess, whose observations of distant supernovae led to the realization that the expansion of our universe is accelerating.
Citizen Scientists Track Down New Planets
Using data gathered by the Kepler Space Telescope, a legion of amateur planet-hunting volunteers have perhaps uncovered the existence of two alien worlds.
SETI Projects Weather Recession
Although funding has eroded for [email protected] and the Allen Telescope Array in the past few years, both alien-hunting projects have survived, thanks to donors and volunteers.
Kenya's Rain of Meteorites
On the morning on July 16th, villagers heard a thunderous explosion in the sky and later found space rocks scattered throughout their corn fields.
Dark Skies in Ohio
Where can you go in the Midwest to view the night sky unimpeded by light pollution? Ohio has a spot for you.
The Return of Cosmos
The most successful PBS television show ever — now 30 years out of date — is being reborn as a new series to be aired in 2013.
Massive Meteorite Found in China
A team of Chinese researchers trekked to a remote mountaintop in the Xinjiang region and identified one of the largest meteorites known.
Remembering Tom Gehrels (1925-2011)
Dutch-born planetary scientist and asteroid hunter Tom Gehrels passed away on July 11th. Sky & Telescope contributing editor Govert Schilling shares his memories of a unique person.
Hail and Farewell, Atlantis!
Sky & Telescope's veteran space-science reporter muses on his long association with the Space Shuttle after witnessing its final launch at 10:29 a.m. EDT on Friday, June 8, 2011.
ALCon Meets Under Dark Mountain Skies
With bright stars all night and amateur-astronomical enthusiasm all day, America's biggest coalition of astronomy clubs held a bang-up annual convention.
Amateur Science on the Rise
Robert Naeye comments on his experience at the annual SAS symposium, held at Big Bear Lake, California.
Praising Arizona — II
S&T contributing editor Govert Schilling visits observatories in southern Arizona.
Praising Arizona — I
S&T contributing editor Govert Schilling visits observatories in southern Arizona
McDonald Observatory Dodges Wildfire
The Rock House Fire has consumed more than 300 square miles in West Texas and came within about a mile of the telescopes atop Mount Locke before abating. But the nearby town of Fort Davis wasn't so fortunate.
Royal Birth Heralded by a Supernova?
Why didn't 17th-century observers see the exploding star that created the Cas A supernova remnant? According to a controversial new hypothesis, British royal historians — but not astronomers — saw the event in 1630.
NEAF: Bigger and Better Than Ever
Record crowds swarmed into the Northeast Astronomy Forum last weekend to examine amateur astronomy's latest telescopes, cameras, gizmos and gear.