SUNSET: 
The Moon Through LRO's Eyes
For the past year, the seven instruments on NASA's Lunar Reconnaissance Orbiter have mapped the Moon up, down, and sideways — and planetary scientists are reaping the results.
The Pillars of Carina
Larger and brighter than the more famous one in Orion, the Carina Nebula is a southern-sky showpiece that boasts several huge tongues of cold gas and dust.
S&T's Audio Sky Tour for September 2010
Venus clings to the horizon in the west just after sunset, while mighty Jupiter rises in the east. Find out how to spot them — and much more! Host: S&T's Kelly Beatty.
Go Ahead: Observe the Moon
You can gawk, study, sketch, image, or just howl. No matter how you do it, head outside on September 18th to celebrate International Observe the Moon Night.
A Ghostly Cosmic Pinwheel
Somewhere in Pegasus, a swollen, aging star has begun its death spiral figuratively and literally — throwing off matter that's taken the shape of a delicate yet perfect spiral.
Happy Birthday, John Dobson!
Amateur astronomy's iconic guru of telescope-making turns 95 on September 14th.
The Dinosaurs Got a Warning Shot
New research shows that eastern Europe took a hit just 2,000 to 5,000 years before the Big One nearly wiped out life on Earth 65 million years ago.
Tour September's Sky! | August 27th, 2010
Venus clings to the horizon in the west just after sunset, while mighty Jupiter rises in the east. Find out how to spot them — and much more! Host: S&T's Kelly Beatty. (6MB MP3 download: running time: 6m 17s)
Big Bear's Big New Eye
The "first-light" image from the world's largest solar telescope reveals details in an Earth-size sunspot only 50 miles across.
Another Flash on Jupiter!
Japanese observer Masayuki Tachikawa appears to have captured another impact on Jupiter, the second one in the past three months.
Jack Horkheimer Passes Away at 72
The airwaves will no longer carry that signature phrase "Keep looking up!", as an iconic figure of amateur astronomy died today at age 72.
The Incredible Shrinking Moon
Planetary scientists have long considered the Moon dead, geologically speaking. But new high-resolution views of the lunar surface argue otherwise.
Astro2010: U.S. Astronomy's Crystal Ball
If you had $12 billion to spend on ground- and space-based observatories over the next 10 years, how would decide what to build? A 255-page National Research Council study, just released, provides some answers.
"And the Winner Is..."
Most of us are just casual skygazers. But each year several amateur astronomers are honored for their true passion and dedication at awards ceremonies across the U.S.
A Lunar Debate: Dry or Wet?
It's been 40 years since Apollo astronauts returned with dusty chunks of the Moon — samples that offer conflicting views of lunar history.
A Solar Tsunami
On August 1st, the Sun let loose with a mighty belch that rippled across its face, sent a torrent of high-energy particles racing into space, and triggered a burst of auroras on Earth.
Green Lasers: A Hidden Danger
They're compact, handy, and incredibly useful at star parties. But beware: a new study reveals that your bargain-priced green laser pointer might be emitting harmful amounts of infrared energy.
Bull's-Eye Crater on Mars
Whether caused by two strikes on the same spot or strange layering beneath the Martian surface, this newly imaged crater is a fascinating find.
S&T's Audio Sky Tour for July 2010
Watch the west after sunset for a celestial parade led by brilliant Venus, then swing south to get cozy with Scorpius. Host: S&T's Kelly Beatty. (5MB MP3 download: running time: 5m 12s)
S&T's Audio Sky Tour for August 2010
Venus, Mars, and Saturn dance in the west after sunset, while soon afterward giant Jupiter rises in the east — all that, and Perseid meteors too! Host: S&T's Kelly Beatty. (5MB MP3 download: running time: 6m 48s)
