SUNSET: 
It's Always "Pluto Time" Somewhere
Sunlight on Pluto is only a thousandth as strong as it is here on Earth. With careful timing, you can experience what it'd be like to stand on Pluto at noon.
The Glint of Martian Glass
Scientists have detected glass in Martian craters, created by the fierce heat of impacts that melted the Red Planet’s surface.
Asteroid Tour: Fly Over Ceres
Visit the dwarf planet Ceres in this video animation created from images taken by NASA’s Dawn spacecraft.
Close-Up of Saturn’s Moon Hyperion
On May 31st, the Cassini spacecraft flew by Saturn’s funky moon Hyperion. The resulting images highlight the moon’s unusually pocked surface.
New Insights From Rosetta's Comet Mission
Rosetta continues to help astronomers better understand the way comets form and how they interact with the universe around them.
Pluto's Perplexing Moons
New data on Pluto’s moons show that the system is more bizarre than previously thought.
What Will New Horizons See — and When?
In his third "insider blog" about the New Horizons mission, principle investigator Alan Stern offers a look at the timetable for getting results from the historic flyby.
Big Sunspot Group Now in View
For sunwatchers who've been disappointed by this weak solar maximum, Active Region 2339 offers something to cheer about.
Pluto: The Last Picture Show
In his second "insider blog" about the New Horizons mission, principle investigator Alan Stern offers a look at what we might find at Pluto. It sounds like science fiction, but it's not: NASA's New Horizons spacecraft is on final approach to the Pluto system! After 112 months in flight, the…
Messenger Crashes, Its Results Endure
After four years at Mercury, NASA's Messenger orbiter has finished its remarkable mission and crashed into the planet.
Do Explosive Bursts Heat the Sun’s Corona?
New evidence suggests that nanoflares, small but potent bursts of energy, might heat the Sun’s atmosphere. But not everybody’s convinced.
Dawn Maps Ceres in False Color
Thanks to NASA’s Dawn spacecraft, we’re finally seeing more of the asteroid Ceres than a fuzzy ball.
Walter H. Haas (1917–2015)
Amateur astronomy has lost a true pioneer, a keen observer who founded the worldwide Association of Lunar and Planetary Observers.
New Horizons: Navigating to Pluto
In the first of a series of installments written exclusively for Sky & Telescope, New Horizons principal investigator Alan Stern offers his behind-the-scenes perspective on what it took to get the spacecraft to Pluto.
NASA Selects Asteroid Mission Concept
NASA has selected the design for its Asteroid Redirect Mission, opting to retrieve a boulder from a larger asteroid.
MAVEN Spots Dust Cloud, Aurora on Mars
NASA’s MAVEN spacecraft has detected dust high in Mars’s atmosphere and auroras across the planet’s northern hemisphere.
Messenger Reveals Mercury Mysteries
With just weeks left before it crashes into its host planet, NASA's Messenger spacecraft is making the most of its extremely low altitude and finding that Mercury isn't a completely dead world.
Magnetosphere Mission Launches
With the goal of better understanding Earth’s space weather environment, NASA’s Magnetospheric Multiscale (MMS) mission launched just over an hour before midnight on March 12th from Cape Canaveral.
Lots of Lunar Layers Under Chang'e 3
A radar sounder aboard China's first-ever lunar lander found at least nine discrete subsurface layers at its landing site in northern Mare Imbrium.
Dawn Orbiter Reaches Dwarf-Planet Ceres
The long-distance traveler has finally arrived at the first dwarf planet (and largest asteroid) yet studied by spacecraft.
