Comet C/2007 W1 (Boattini) has reached 6th magnitude, brighter than expected. In late May it should be visible from dark sites in the southern US and points south. When it reappears in July, will it be naked-eye?

The Red Planet travels through one of the biggest and brightest star clusters in the sky from May 21st to the 24th. And as a warm-up, on the evening of May 19th in easternmost America and May 20th in westernmost Europe and Africa, stargazers can watch Mars pass a hair's-breadth north of the 5th-magnitude star Eta Cancri.

For 18 minutes on the night of May 21-22, the King of Planets will be missing his entire court — as all four Galilean satellites disappear from view.

Mercury is normally elusive, but it's putting on an extraordinarily good evening show for observers at mid-northern latitudes from late April through mid-May 2008.

What better way to enjoy May's evening sky sights than to let Sky & Telescope take you on a guided tour?

Download your free PDF chart to locate the ex-planet Pluto in 2008.

This pearly glow is surprisingly easy to see — if you know what to look for.

Your images from Wednesday night's total eclipse of the Moon are pouring in.

Eclipses, occultations, conjunctions, and meteor showers — there's no shortage of celestial action in 2008.

Don't miss February's total lunar eclipse (the last one anywhere until late 2010) — and look ahead to a total solar eclipse in exotic settings in August.

With minimal moonlight to interfere, the best meteor showers of 2008 should be the Quadrantids, the Aquarids, and the Perseids.

When Comet Holmes suddenly brightened by nearly a million times, it became a snap to spot with just your eyes. It is also a snap to shoot with a camera. Check out amateur images of the comet — and submit your own!

The world's largest orbiting satellite is a snap to spot if you know where and when to look for it.