SkyWeek App for Android
To celebrate its 70th anniversary, Sky & Telescope is releasing a free app, S&T SkyWeek for Android.
Best-yet Value for Universe's Expansion
A new study with the Hubble Space Telescope pins down the universe's expansion rate with unprecedented accuracy.
Galaxy Sparkles in New Hubble Image
The Hubble Space Telescope captures a spiral galaxy in remarkable detail.
A New Light on Jupiter
With the help of Jupiter's moon Europa, astronomers have imaged the re-emerging South Equatorial Belt in unprecedented detail.
New Images from Old Data
Find out how Joe DePasquale converted grayscale ESO data into beautiful full-color images as part of the Hidden Treasures competition.
A Galaxy when Galaxies Were Young
News media worldwide are reporting today on the new "farthest galaxy ever found," but the discovery is not quite as definite as it’s being made out.
The Crab Nebula Flickers!
A recent study shows that the Crab Nebula, long considered a steady source of X-rays, actually fluctuates.