SUNSET: 
Double Whammy on Mars
On January 10th, NASA's Mars Reconnaissance Orbiter spotted twin craters joined at the rim — the consequence of equal-size halves of a single object striking the planet together.
Leif J. Robinson, 1939–2011
All of us who work at Sky & Telescope are deeply saddened to receive news this morning that our long-time editor in chief, Leif J. Robinson, has passed away at the age of 71.
A Half-Gigabyte View of the Moon
This week NASA scientists unveiled a view of the lunar nearside that measures an astounding 24,000 by 24,000 pixels.
See Venus in Broad Daylight!
Monday and Tuesday, February 28th and March 1st, offer excellent opportunities to spot Venus during broad daylight with your unaided eyes.
NASA’s First Robot Astronaut
Imagine an astronaut that can work tirelessly 24 hours a day, seven days a week — without needing food, drink, or oxygen.
How Many Stars Can You See?
Join the sixth worldwide GLOBE at Night 2011 star-counting campaign (March 22nd through April 4th), and do your part to fight light pollution!
Galaxy Sparkles in New Hubble Image
The Hubble Space Telescope captures a spiral galaxy in remarkable detail.
Boston's Planetarium Gets a Makeover
Looking spiffy after a year-long, $9 million renovation, New England's largest sky theater can now transport audiences to the edge of the universe in style.
Stardust's Date With Comet Tempel 1
Low on fuel but right on the money, NASA's Stardust spacecraft visited its second comet earlier today. Scientists are eager to see the crater supposedly punched in the icy nucleus 5½ years ago. One small problem: there's not much of a crater to see.
Biggest Solar Blast in 4 Years
Solar activity is indeed ramping up: the strongest solar flare in four years erupted on February 15th, dealing a glancing blow on the 18th.
Measuring Skyglow with Digital Cameras
Digital cameras are great for measuring skyglow, but more work needs to be done to automate the process.
Inside Sky & Telescope's April 2011 issue
Sky & Telescope's April 2011 issue is now available to digital subscribers.
A New Light on Jupiter
With the help of Jupiter's moon Europa, astronomers have imaged the re-emerging South Equatorial Belt in unprecedented detail.
Get Ready for a Solar-System Bonanza
We already have spacecraft orbiting the Moon, Venus, Mars, and Saturn — and another more than halfway to Pluto. But the year 2011 stands to be one of the busiest ever for new interplanetary missions.
New Images from Old Data
Find out how Joe DePasquale converted grayscale ESO data into beautiful full-color images as part of the Hidden Treasures competition.
The Sun Has Nothing to Hide
For the first time, scientists can examine the front and back sides of our star at the same time, thanks to a pair of distant Sun-watching spacecraft.
Kepler's Outrageous Six-planet System
NASA's Kepler space telescope has found1,200 likely new planets, including the most bizarre planetary system yet.
Gemini Telescope's "Bad-Seeing Blaster"
Ten years in development, a new system now being tested in Chile uses a 50-watt laser to create a constellation of five artificial stars high in the atmosphere. The goal? Soon it will allow the giant Gemini Telescope to record ultrasharp views never before possible.
Jupiter Swallows an Asteroid
Some careful spectroscopic detective work has led astronomers to conclude that a cruise-ship-size asteroid — not a small comet — smacked into the king of planets in July 2009.
Tour February's Sky! | January 28th, 2011
February brings into view Orion and his faithful hunting dogs, a set of constellations that sparkle with bright, colorful stars.
