SUNSET: 
Ancient Spiral Galaxy Discovered
An ancient spiral galaxy offers another tantalizing clue to how nature might create these grand designs.
Impossibly Aligned Galaxies
Astronomers have found an alignment of galaxies along our line of sight that’s so rare, it ought to be impossible. Is it just luck — or does it tell us something more?
How to Grow a Supermassive Black Hole
A new study says most black holes may grow by snacking instead of collision-induced feeding frenzies.
A Windy Early Universe
Winds in the early universe could make radio observations of the first stars and galaxies a little easier, says a new study published in Nature.
X-ray Telescope Launches Successfully
NuSTAR, the first telescope to focus high-energy X-rays, launched today after 20 years of planning.
Afghans Reach for the Stars
Reach for the Stars aims to bring astronomy back into Afghanistan’s elementary school curriculum in a way that resonates with the region’s culture and history.
Exotic Objects Test Einstein’s Theory
Pulsars, supermassive black holes, and white dwarfs are all tools in astronomers' arsenals as they continue to push Einstein's theory of general relativity to its limits.
What is the Black-Drop Effect?
The famous (or infamous) black-drop effect earned its place in history long before astronomers knew what caused it.
Where to See the Transit of Venus Online
Find out where you can view June 5th or 6th's transit of Venus online.
Where to See the Annular Solar Eclipse Online
If you're not in the path of this weekend's “ring of fire” eclipse, find out where you can view it online.
IBEX's Slower Sun — and No Bow Shock
NASA's Interstellar Boundary Explorer has discovered that the Sun has no bow shock, overturning the basis for decades of scientific research.
S&T’s NEAF Round-Up
Sky & Telescope editors just returned from our annual pilgrimage to the Northeast Astronomy Forum, where we scoped out new products and talked with our readers.
“Coronal Cells” in Sun’s Atmosphere
Astronomers have discovered an unexpected new feature on the Sun, leading to further insights about the solar magnetic field.
Venus Befriends Crescent Moon
The crescent Moon lies close to crescent Venus just after twilight tonight, a great target for a good pair of binoculars.
Watch April 16th's Solar Flare!
The Sun erupted yesterday in a magnificent display, and more might be on its way.
International Dark Sky Week
Light pollution affects more than just astronomy. Learn what you can do to save energy and baby sea turtles — and keep our skies dark.
Dark Energy BOSSes Around the Universe
Astronomers are honing in on the nature of dark energy, a mysterious, repulsive energy that pervades all of space. Among the questions they're trying to answer: does dark energy exist?
Hubble Images Stir Up Dark Matter Debate
Dark matter in the "Train Wreck" galaxy cluster (Abell 520) appears to behave in unusual ways. Now, new Hubble images are heating up the debate.
An Emerald-Cut Diamond in the Rough
Astronomers have discovered a rare, rectangular galaxy 70 million light-years away. The dwarf galaxy's unique history presents a challenge for current theories of galaxy evolution.
The Quest for Totality
Check out footage from the Patagonia and Antarctic total solar eclipses described in July's issue of S&T!
