The Rosetta spacecraft is closing in on Comet 67P/C-G, providing astronomers with an ever more detailed view of its structure. Judging by the latest photos, it actually has two components and is shaped like… a rubber ducky?
New Horizons will reach Pluto a year from today, and the scientific community is abuzz with speculation about what the space probe might see when it gets there. Meanwhile, the New Horizons team scours the skies for a Kuiper Belt Object that New Horizons can visit after its Pluto flyby.
How did the the innermost planet get its huge iron core? New computer modeling suggests that Mercury is a lucky survivor of chaotic primordial smashups.
Comet 67P/Churyumov-Gerasimenko only woke briefly before starting another nap, expected on-again-off-again behavior that bodes well for the comet-chasing spacecraft's arrival in August 2014.
Despite skepticism from scientists and politicians alike, NASA is proceeding with its asteroid redirect mission and has found six candidates for exploration so far.
NASA’s crippled planet-hunting spacecraft has been reworked for at least two years of productive new missions.
Although its scientific work for NASA ended in the early 1980s, the International Sun-Earth Explorer never quite died — and this week it was revived by a team of volunteers intent on letting it continue exploring interplanetary space.
A small asteroid slammed into the Martian surface sometime between March 27 and 28, 2012, creating a crater swarm in the ground. The largest pit is 159 feet across.
The Mars rover Opportunity has been cleaned of heavy dust coating its solar panels, thanks to some strong winds blowing over the rim of Endeavour Crater.
New images from NASA’s Cassini mission show bright spots along Saturn’s A ring, likely caused by a small moonlet in the process of forming or shattering.
NASA has a fully functioning spacecraft orbiting the Moon, all science goals completed, and a lunar eclipse coming up. It's a perfect opportunity to make some risky but potentially rewarding swoops within 2 miles of the lunar surface.
The European Space Agency’s comet-chasing spacecraft has imaged its destination for the first time since waking up from 957 days of hibernation.
With the first interactive lunar north pole mosaic released by the NASA’s Lunar Reconnaissance Orbiter Camera team you can explore an area of the Moon’s northern hemisphere about the size of Alaska and Texas combined.
Now that they've seen all of the innermost planet up close, geologists realize that Mercury's crust buckled and fractured as the planet cooled and shrank far more than previously measured.
SkyCube, a crowd-funded nanosatellite built to engage the public in space exploration, has been deployed from the International Space Station. Now its creators are anxiously waiting to establish two-way contact.
Astronomers have witnessed the largest lunar impact to date. With an impact energy equivalent to 15 tons of TNT — approximately 3 times as great as the previous record-holder — the flash was visible even to the naked-eye.
For more than 40 years, astronomers have been firing lasers at specially-designed reflectors left on the lunar surface. But over time they've gotten dusty — and especially finicky whenever there's a full Moon.
NASA’s Mars Science Laboratory — Curiosity — has successfully crossed a sand dune standing between the rover and its final science destination.
NASA’s Mars Reconnaissance Orbiter HiRISE camera captured this stunning image of a fresh impact on the Martian surface.
Astronomers are beginning to understand the unlikely formation and dangerous survival of exoplanets circling binary stars.
Sky & Telescope announces the first-ever globe of Mercury, pieced together from the latest images taken by the Messenger spacecraft. It's now available on our online store!
Reports suggest that something went wrong as the Yutu rover prepared to hibernate through the long lunar night. The glitch could be the end of the little robot.
Can you believe it? A robotic rover designed to last 90 days on the Red Planet is celebrating 10 years of successful exploration on the Red Planet — even taking a "selfie" for its handlers back on Earth.
There'll be a new wrinkle facing NASA's Dawn spacecraft when it reaches Ceres next year: what's causing this big round ball to give off puffs of water vapor?
Europe's comet-chasing spacecraft woke up after a 957-day-long hibernation to begin the most comprehensive comet study to date. Part of its mission: attempt to place an instrumented lander on a comet’s nucleus for the first time.