SUNSET: 
Tour April's Sky: Critters on the March
The stars of northern winter linger in the west as celestial bears, a lion, and a snake climb in the east. Meanwhile, Jupiter and Venus sparkle overhead.
How Slippery Is Dark Matter?
Dozens of galaxy clusters confirm that dark matter particles slip right past each other within messy cluster mergers.
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.
Reports from March 20th's Total Solar Eclipse
With risky prospects on far-northern islands and at a premium aboard aircraft, observers looked on with awe as the Moon's shadow swept across the Arctic Ocean
New Dwarf Galaxies Near Milky Way
Astronomers have found a set of new dwarf galaxy candidates near the Milky Way Galaxy, a discovery crucial to understanding dark matter.
Getting to Totality: Not Easy!
As the countdown for Friday's total solar eclipse nears zero, "umbraphiles" from around the world are flocking to remote parts of the far north in the hope of finding clear skies.
Nova (Nova Sagittarii 2015 No. 2) Erupts in Sagittarius
A 6th-magnitude nova has erupted inside the Sagittarius Teapot. It may (or may not) still be brightening.
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.
Ripples in the Milky Way
Astronomers have detected what look like four undulations in the Milky Way Galaxy’s disk. If the structures are all part of the disk, our galaxy is more than half again as large as we thought it was.
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.
Witness the Northern Lights with S&T
Sky & Telescope is leading its third annual trip to Iceland this fall to explore a unique culture and witness the northern lights. Come join us!
Comet Lovejoy Shines On
Follow Comet Lovejoy high overhead while you still can. Use our February finder chart below. The comet is fading more slowly than expected.
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.
March 20th's Arctic Total Solar Eclipse
When the Moon next covers the Sun, on the equinox, its hard-to-reach path will include the North Pole but very little land.
Hubble Spots a Lensed Supernova
For the first time, astronomers are watching as a supernova’s light bends around a massive galaxy on its way to Earth.
New Stars On Strange Orbits in Milky Way
Astronomers have found two just-born star clusters an incredible 16,000 light-years above the plane of the Milky Way galaxy.
Potential Mid-size Black Hole Found
Scientists have found what seems to be an intermediate-mass black hole in a spiral galaxy 100 million light-years away. If its size is confirmed, it could provide much-needed insight into black hole evolution.
Dusty Galaxy in the Early Universe
A small galaxy 700 million years after the universe’s birth has a dust reservoir that makes it look like a much older galaxy.
