SUNSET: 
Tour October's Sky! | September 30th, 2011
This is a month of transition: Northern summer becomes autumn, Saturn sets just before Jupiter rises, and Venus is moving from the morning sky before dawn to the evening sky.
WISE's Survey of Near-Earth Asteroids
A heat-sensing NASA spacecraft finds that there aren't nearly as many large and midsize asteroids hovering near Earth as astronomers thought. Now we can all sleep a little easier.
One Image, Five Moons
A quintet of Saturn's moons come together in the Cassini orbiter's field of view for a group portrait.
M101's Supernova Shines On
As of October 3rd the supernova in the galaxy M101 was down to about magnitude 11.1, after peaking in mid-September at 9.9. It's fading by about 0.1 magnitude every two days now, and it has changed from white to strikingly orange-red.
GRAIL Heads for the Moon
By this time next year, the twin spacecraft of NASA's Gravity Recovery and Interior Laboratory mission should have given geophysicists an unprecedented peek at the lunar interior from crust to core.
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.
S&T's Audio Sky Tour for September 2011
This is a month of transition: Summer is making way for autumn, Saturn sets just before Jupiter rises, and Venus is moving from the morning sky before dawn to the evening sky.
Tour September's Sky! | August 31st, 2011
This is a month of transition: Northern summer becomes autumn, Saturn sets just before Jupiter rises, and Venus is moving from the morning sky before dawn to the evening sky.
Perseids: Looking Up, Looking Down
Earthbound observers struggled to see August's famous "shooting stars" through a sky awash with moonlight. But a shutterbug astronaut aboard the International Space Station had the best view of all!
Off Year for the Perseid Meteor Shower
The year's best-known display of shooting stars is usually dramatic and dependable. But even though light from a full Moon will wash out the fainter arrivals when the shower peaks early in the morning of August 13th, you'll still see the shower's brightest meteors streak across the sky.
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The most successful PBS television show ever — now 30 years out of date — is being reborn as a new series to be aired in 2013.
S&T's Audio Sky Tour for August 2011
This is your last chance to spot Saturn before it sinks into the evening twilight. But there are many other celestial attractions to look for on August evenings.
Tour August's Sky! | July 29th, 2011
This is your last chance to spot Saturn before it sinks into the evening twilight. But there are many other celestial attractions to look for on August evenings.
Earth's Traveling Companion
Astronomers have identified a small body sharing Earth's orbit in a gravitationally stable resonance that keeps it from hitting us or escaping. Finally, Earth has a Trojan asteroid to call its own.
Kepler's Dilemma: Not Enough Time
NASA's planet-hunter has already identified more than 1,200 exoplanet candidates. But project managers now quietly acknowledge that the spacecraft will have serious difficulty spotting habitable, Earth-size worlds by the mission's end next year.
Next Mars Rover Targets Gale Crater
When NASA launches the multibillion-dollar Curiosity rover toward Mars in November, it'll make a beeline for the floor of a large crater that geologists say once brimmed with liquid water.
A New Radio Observatory in Space
With the long-awaited (and long-overdue) launch of Russia's Spektr-R spacecraft, radio astronomers can look forward to resolving never-before-possible details in the dynamic cores of active galaxies and other exotic targets.
Rare Occultation by a Double Asteroid
Early on Tuesday, July 19th, lucky observers along a 120-mile-wide path from north-central California to central Saskatchewan have a chance to watch a big, enigmatic double asteroid briefly cover a relatively bright star in Aquarius.
Even if you're nowhere near the path, one enterprising observer plans a live webcast of the view through his telescopes during the event.
Messy Cleanup Awaits Subaru Telescope
It's always bad news when your coolant line ruptures and spews antifreeze everywhere. It's really bad news when the stuff leaks all over one of the world's largest telescopes.
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.
