Recent research casts doubt on whether nearby Kapteyn b, a supposed super-Earth circling in its star’s habitable zone, is a planet at all.
Visit the dwarf planet Ceres in this video animation created from images taken by NASA’s Dawn spacecraft.
Sky & Telescope's third annual trip to Iceland, this time accompanied by Equipment Editor Sean Walker, provides a fantastic opportunity to photograph the aurora borealis.
On May 31st, the Cassini spacecraft flew by Saturn’s funky moon Hyperion. The resulting images highlight the moon’s unusually pocked surface.
Sky & Telescope's introductory videos walk you through all aspects of buying, using, and caring for your first telescope.
The chaos of stars strewn across a dark sky offers a lesson in awe and humility. Master your own night sky when you take 40% off our planisphere and other get-started astronomy products, now through Sunday.
Rosetta continues to help astronomers better understand the way comets form and how they interact with the universe around them.
Ever wanted to own one — or even all — of Sky & Telescope’s globes? Here’s your chance: Through this Sunday, June 7th, you can take 40% off the price of every globe you purchase.
New data on Pluto’s moons show that the system is more bizarre than previously thought.
Most of the things that are visible in any telescope, big or small, are barely visible in that telescope. You can't pick them up just by sweeping. You have navigate to the precise spot.
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.
Amateur observers helped reveal a rare eclipse of a close stellar pair known as b Persei by a third companion star.
The International Year of Light is well underway and provides a host of opportunities for astronomy outreach. Find out what programs and resources are available!
Starry cannibalism of Wolf-Rayet Star Nasty 1 may offer clues as to how massive, pre-supernova stars evolve.
Watch as the two brightest planets — Venus and Jupiter — edge closer together and culminate on June 30th with a dramatically close pairing.
Researchers using NASA’s Wide-Field Infrared Survey Explorer (WISE) have discovered the most luminous galaxy to date.
Watch in-depth conversations between Dennis di Cicco and astronomy vendors to find full details on hot new products and featured equipment.
Observations of white dwarfs in a densely populated globular cluster confirm astronomers’ expectations that stars will migrate to a cluster’s outskirts after losing weight.
New analysis of Kepler observations shows that hot Jupiters' temperatures might predict their weather report.
It’s time to get away from all those city lights and gather together to share in the secrets of the universe.
Two new studies confirm that the white dwarfs that explode as Type Ia supernovae can approach death in two different ways.
Observations of nearby super-Earth 55 Cancri e reveal huge, as-yet unexplained changes in the exoplanet’s infrared emission, and volcanoes are one possible cause.
With the initial release of the USNO's Robotic Astrometric Catalog (URAT1), astronomers now have precise positions for about 228 million stars in the northern sky. Given my love of stone walls, I've been thinking about building one in the backyard to enclose the flower beds. But I haven't had the gumption to actually buy...
Astronomers have detected a massive yet elusive nimbus of hot gas surrounding Andromeda Galaxy.
After 17 years, researchers using the Parkes radio telescope in Australia have identified the culprit behind a mysterious type of radio signal: two on-site microwave ovens.