SUNSET: 
Chilean Observatories Survive Quake
All the major amateur and professional telescopes in Chile are in good working order despite Saturday's powerful earthquake.
Supernova Mystery Remains Just That
Despite a recent claim, astronomers still don't understand an important class of exploding stars.
IAU's Discovery Clearinghouse Moves
The Central Bureau for Astronomical Telegrams, long the place from which astronomical discoveries have been announced to the world, has a new address.
New Plan for NASA
The Obama administration abandons NASA's Constellation Moon program, but sets its sights farther afield.
Exoplanet News Roundup
From little red dwarfs to big blue blazers, stars of all masses seem to form planets robustly. That's just one item from the latest crop of exoplanet news.
Dark Matter and Dark Energy Update
From the Milky Way's halo to the far reaches of the cosmos, the two dominating components of the universe are revealing more hints about themselves.
WISE Sees First Light
Scientists unveil the first image from the Wide-field Infrared Survey Explorer satellite, which will map the sky in depth and detail at new wavelengths.
A "Treasure Map" of Millisecond Pulsars
The gamma-ray sky map assembled by the Fermi satellite points the way to finding natural, high-precision "clocks." These could be used in a cosmic GPS-like system to look for flexings of spacetime.
Black-Hole Bonanza
Astronomers announce supermassive double holes, an intermediate-mass hole that seems to have pulled apart a star, fast-spinning holes, and a screaming runaway.
A Super-Duper Supernova
A much anticipated new type of exploding star lights up a distant galaxy.
Stellar Mystery Solved, Einstein Safe
Astronomers have resolved a long-standing discrepancy with general relativity.
Clouds Part for Solar Eclipse
With the monsoon in full swing, observing conditions were iffy across the entire land path — from India through China — of the July 2009 total solar eclipse. Nonetheless, a surprising number of people managed to obtain great views of totality through holes in the clouds.
At Last, an Exoplanet by Astrometry
After decades of frustration and false alarms, astronomers may finally have a new method in their toolkit for finding planets around other stars: astrometry.
Our New Blogger: Ivan Semeniuk
Sky & Telescope is pleased to announce a new blogger for our website: Canadian science writer and broadcaster Ivan Semeniuk.
The Farthest Thing Ever Seen
NASA has announced finding a gamma-ray burst with a redshift of about 8.2. That puts it 95% of the way back to the Big Bang.
NEAF 2009 Videos Are Here!
Huge numbers of amateur astronomers flocked to the 18th annual Northeast Astronomy Forum to attend talks by world-renowned astronomers — and to sample (and often buy) the wares at one of the world's largest telescope shows. For the first time, Sky & Telescope was able to videotape the event, including interviews with many of the exhibitors . . .
S&T Now on Twitter
You can now follow Sky & Telescope on the social-networking service Twitter. Sign up to follow S&T, and you’ll be notified whenever we post new stories on our home page.
Global Astronomy Marathon Underway
The largest astronomy public outreach event in world history got off to a flying start today with the official opening ceremony at the Franklin Institute in Philadelphia.
New Light on Dark Matter
Soon after it was installed on Hubble, the ACS captured this image of the Cone Nebula, a stellar nursery shrouded in hydrogen gas.Courtesy Holland Ford (JHU), NASA, ACS Science Team.Like other large spiral galaxies, our Milky Way shines with the light of hundreds of billions of stars. It contains giant…
Gamma-Ray Burst Hints of Space-Time Foam
Observations from NASA’s orbiting Fermi observatory hint that extremely high-energy gamma rays don't travel at the speed of light. If more observations bear this out, it will rock the foundations of physics, hint at small-scale "space-time foam," and perhaps point the way to a "theory of everything."
