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.
Gaia launched flawlessly Thursday morning at 9:12 UTC (4:12 a.m. Eastern Standard Time). This long-awaited mission will precisely map the distances and motions of 1 billion stars in our galaxy.
For the first time since 1976, a spacecraft has landed safely on the Moon. Within hours, the Chinese spacecraft Chang'e 3 had deployed an instrumented rover.
Ancient Mars seems to have had all the necessities as a comfy habitat for microbial life.
If all goes well, on December 14th the Moon will host its first soft-landing spacecraft since 1976.
Is the comet dying, just three days before its closest pass by the Sun? There are signs that its nucleus has stopped producing anything.
NASA's next orbiter has successfully launched and is en route to the Red Planet. When it arrives, it will pry into the secrets of Mars's climate, both past and present, and hopefully reveal how the cold, dry world lost most of its ancient atmosphere.
The Kepler team has released its analysis of the mission’s first three years of observations. The haul includes 10 Earth-size (and probably rocky) exoplanets in their stars’ habitable zones, and the stats show such planets are common.
India's first mission to the Red Planet launched successfully November 5th from a barrier island off the country's coastline. The mission will study Mars's atmosphere and surface and is an important milestone for the country's space agency.
A NASA spacecraft bound for Jupiter made a close flyby of Earth to gain speed for the long trek outward, and amateur astronomers prepared to watch its passage.
A balloon-borne mission launching from the Southwest will aim a telescope at the approaching Comet ISON. While it won't observe the comet at its best, the mission might reveal details about the composition of the icy body and the family it comes from.
The Curiosity rover conducted super-sensitive tests of the Red Planet's atmosphere for methane — the most abundant hydrocarbon in the solar system — and found none. What does this finding mean for the search for Martian life?
Primarily known for its up-close comet observations, the Deep Impact spacecraft went on the fritz in mid-August. The mission team scrambled to reestablish communication, but efforts were unsuccessful.
Despite funding pushback in the House of Representatives, NASA is full steam ahead in plans for its asteroid retrieval mission.
Japan's latest spacecraft is designed to study gas escaping from the atmospheres of Earth's neighbors in the solar system.
With the release of new results this week, NASA scientists are now confident that their plucky probe, launched 36 years ago, has entered interstellar space.
NASA's Lunar Atmosphere and Dust Environment Explorer left Earth on Friday night — an event widely seen up and down the East Coast — on a mission to solve a 45-year-old mystery.