No Big Black Hole for Two ULXs

Two studies suggest that ultraluminous X-ray sources are not all created by beefy black holes.

(Geologically) Recent Volcanoes on the Moon?

Images from NASA’s Lunar Reconnaissance Orbiter show dozens of small, curious features that might be volcanic eruptions in the past 50 to 100 million years.

G2 Survives Black Hole Pass

The object has survived its swing around the Milky Way’s supermassive black hole, but the questions of what it is and where it comes from remain unanswered.

Comet Siding Spring Skims Past Mars

Mars has a front-row seat for an extremely close encounter with Comet Siding Spring (C/2013 A1) on October 19th. OBSERVING HIGHLIGHTS

Zodiacal Light – Captivated by Comet Dust

October’s a perfect time to see the zodiacal light, a tapering tower of comet dust standing high in the eastern sky before dawn. Here’s how to find it.

This Week’s Sky at a Glance, October 17 – 25

Some daily sky sights among the ever-changing stars and planets.

Partial Solar Eclipse, October 23, 2014

Spectators in western North America are positioned perfectly to view the upcoming partial solar eclipse.

Tour October’s Sky: Pegasus Flies High!

October is always pleasant for observing the night sky because evenings are cool and come relatively early. Use our downloadable stargazing podcast to find all the month’s highlights.


Join S&T on an Exotic Cruise to See the 2016 Solar Eclipse In partnership with InSight Cruises, Sky & Telescope offers you a golden opportunity to witness the spectacular beauty of the March 9, 2016 total solar eclipse in the western Pacific aboard the Holland America liner ms Volendam.


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