SUNSET: 
New Trove of Iron Meteorites
Geologists have found a fresh impact crater in southern Egypt surrounded by thousands of pieces of the cosmic collider that formed it.
WISE Takes a Look (All) Around
NASA's latest space observatory has just completed a six-month-long sweep of the entire sky at infrared wavelengths.
Strange Twists in Saturn's Rings
Thousands of mysterious, propeller-shaped features have been found in Saturn's A ring. Could these hold the key to the ring system's origin?
Rosetta Visits a Big Space Rock
A European-built comet chaser swept past asteroid 21 Lutetia today, offering glimpses of what might be a largely metallic body that's 100 miles across.
Hayabusa's Waiting Game
Tiny particles have been found inside the capsule returned to Earth three weeks ago by the Hayabusa spacecraft. Are they bits of asteroid Itokawa — or contamination from the Australian landing site?
A KBO in the Crosshairs
When an enigmatic object in the distant Kuiper Belt occulted a star last October, an international team of observers — including several amateur astronomers — were ready and waiting.
The Moon: Damp from Day One
A new analysis of Apollo samples, using technology that didn't exist 40 years ago, finds that water (just a bit of it) must be present inside the Moon.
The Jupiter Meteor that Didn't Go Splash
Scrutiny by Hubble finds no mark on Jupiter from the impact that two amateurs videorecorded on June 3rd. Apparently, the incoming meteor burned up high above Jupiter's clouds.
Welcome Home, Hayabusa!
In a thrilling tale of triumph over adversity, the Japanese probe Hayabusa slammed into Earth's atmosphere over Australia on June 13, 2010.
Sun's Size is "Rock Steady"
After measuring the Sun's diameter every 12 minutes for 12 years, astronomers have confidence that our star's diameter is constant to within one part in a million.
Amateurs Alert NASA to Saturn Storm
Thanks to the vigilance of planet-watchers around the world, Cassini scientists have captured key observations of a storm that erupted into view during mid-March.
Readying for Hayabusa's Return
When the Hayabusa spacecraft returns to Earth on June 13th, an international welcoming party will be waiting in Australia to spot and recover its sample-return capsule.
A Solar Sentinel's Stunning Debut
NASA researchers are betting that the Solar Dynamics Observatory will help them understand the Sun as never before — and enthrall the public with kaleidoscopic images and videos.
The Return of Neptune
It's taken 164 years, but Neptune is once again located exactly where it was when discovered by Johann Galle and Heinrich d'Arrest.
Sparks on Saturn
NASA's Cassini orbiter has finally captured images of lightning storms on the ringed planet.
An Amateur's Mercury Odyssey
In 1998 a trio of amateur astronomers slapped a video camera on Mount Wilson's 60-inch reflector and aimed it at Mercury. A decade later, NASA's Messenger spacecraft rediscovered many of the surface features they found.
Future Shock From Gliese 710
Is our solar system's Oort Cloud in danger of being stirred up by a passing star? A fresh analysis of Hipparcos observations argue that the answer is most likely "yes" — but not for another 1.4 million years.
Zodiacal Light's Mystery Solved
Eerie and elusive, the zodiacal light is created from sunlight glinting off countless dust particles in the inner solar system. At last, astronomers have figured out where all that grit comes from.
Ski Luna!
Geologists once believed the Moon was utterly dry. But just-announced results argue that abundant water ice lies stashed inside lunar craters near the north pole.
The New Face of Pluto
Planetary scientists scratching their heads over the dramatic face-lift that this distant little world underwent sometime between 1994 and 2002.
