Eris illustration

ESO / L. Calçada

Bulletin at a Glance

This Week’s Sky at a Glance

Eris and Pluto: Does Size Matter?

October 27, 2011 | It’s been nearly a year since the dwarf planet Eris passed directly in front of a star and, in doing so, gave observers the measurements they needed to deduce its diameter. It turns out that Eris and Pluto are almost exactly the same size — and yet different in many ways. > read more

Comet Elenin’s Last Gasp

October 25, 2011 | It was never going to be an “extinction-level” threat to Earth, but skygazers had hoped that Comet Elenin (C/2010 X1) would put on a decent show in October’s predawn skies. In the end, however, it just went “poof”. > read more

“Blue Stragglers” Renewed by Stealing

October 24, 2011 | Some deceptively youthful stars may find their fountains of youth in material they grab off other stars. > read more


S&T: Lauren Darby

Tour November’s Sky by Eye and Ear!

October 28, 2011 | With the return to Standard Time for North America and Europe, northern stargazers can catch some of the evening’s offerings before dinnertime. Venus and Jupiter are planetary bookends at sunset, with Venus lurking low in the western twilight just as the King of Planets rises in the east. > read more

Uranus and Neptune in 2011

May 31, 2011 | Uranus and Neptune are easy to find with the aid of the charts in this article. > read more

Ceres and Vesta in 2011

September 8, 2011 | The two brightest asteroids are in fine view for binoculars or a telescope. Here are instructions and charts to find them. > read more

Jupiter: Big, Bright, and Beautiful

September 23, 2011 | The “King of Planets,” which will dominate the evening sky from late 2011 through early 2012, is a captivating sight no matter how you look at it. > read more

Observe Mira, the Amazing Star

September 28, 2011 | The extraordinary variable star Mira is expected to peak in early October, 2011. > read more

Trusty Comet Garradd

September 1, 2011 | Comet C/2009 P1 Garradd is shining at 7th or maybe even 6th magnitude as it traverses southeastern Hercules. > read more

This Week’s Sky at a Glance

The arrangement in bright twilight

This Week’s Sky at a Glance

October 28, 2011 | Jupiter is at an unusually close opposition, as big as you’ll ever see it. Venus and Mercury show themselves together briefly after sunset. And Comet Garradd shines on. > read more


December 2011 S&T

December 2011 S&T

Sky & Telescope December 2011

October 26, 2011 | Sky & Telescope‘s December 2011 issue is now available to digital subscribers. > read more

Let the Star Parties Begin!

April 14, 2011 | Want to gaze at the Milky Way all night or peer into the eyepiece of a 12-inch telescope? Escape the city lights and head for the nearest big amateur nighttime gathering. > read more

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