Akatsuki spacecraft at Venus
JAXA / Akihiro Ikeshita

Bulletin at a Glance

This Week’s Sky at a Glance


May 23, 2010 | Are volcanoes erupting on Venus? Does lightning zap the planet’s atmosphere? A new interplanetary probe aims to answer these questions and many others. > read more


Closure for Copernicus

May 23, 2010 | More than 4½ centuries after his death in 1543, Nicholas Copernicus received a hero’s acclaim as his remains were interred in Frombork, Poland. > read more




Ceres passing the Lagoon Nebula. The ticks show Ceres's position at 0:00 UT on the dates indicated (not the civil dates in the Americas).
Sky & Telescope; Everton Allen


May 27, 2010 | Ceres, the largest main-belt asteroid, passes through the southern edge of the Lagoon Nebula on Tuesday night. > read more


Faint Comet in the June Dawn

May 19, 2010 | Bring a telescope to catch Comet C/2009 R1 (McNaught) low in the east. > read more


Tour June’s Sky by Eye and Ear!

May 28, 2010 | June’s nights are the shortest all year for northern skywatchers, but as a consolation you’ll find Venus, Mars, and Saturn in the evening sky. > read more


See Pluto in 2010

March 24, 2010 | In 2010, Pluto passes in front of one of the densest star clouds in the sky, and also in front of a dark nebula that obscures almost all the background stars. > read more


Disappearing Act on Jupiter

May 18, 2010 | One of the giant planet’s signature bands, the South Equatorial Belt, began fading late last year. Now, for the first time since 1992, it’s completely missing. Amateur and professional observers worldwide are eagerly hoping to witness its return. > read more


This Week’s Sky at a Glance


Looking southeast, 11 p.m.


May 28, 2010 | Watch Mars closing in on Regulus after dusk this week. The largest asteroid sails past the Lagoon Nebula. And one-belted Jupiter climbs up before dawn. > read more




The 200-inch Hale Telescope at Palomar
Tony Flanders


May 23, 2010 | Palomar Observatory is still alive and well 62 years after the famous 200-inch Hale Telescope became operational. > read more


RTMC 2010, Part II

May 26, 2010 | Amateur telescope making still plays a central role in our hobby. > read more


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