SUNSET: 
Sky at a Glance | May 31st, 2008
Mars shines in the west after dark, giving no hint of the Phoenix lander newly sitting on its northern plains. In our sky, Mars is moving toward the eye-catching Saturn-and Regulus pair to its upper left.
Sky at a Glance | May 23rd, 2008
Mars, shining in the west after dark, is moving away from the Pollux-and-Castor pair toward the Saturn-and Regulus pair. And big Jupiter rises by midnight: an eerie UFO of a thing in the southeast.
Supernova Caught at its Very Start
By an unbelievable stroke of luck, X-ray astronomers catch the first minutes of a supernova explosion. You wouldn't have wanted to be there.
The Milky Way's Most Recent Supernova
Hidden behind interstellar clouds is a blast wave from a star that blew up as recently as 1850.
Sky at a Glance | May 9th, 2008
The waxing Moon this week travels from the Castor-Pollux-Mars lineup in the west to the Saturn-and-Regulus pair in the southwest and then all the way over to sparkly Spica in the southeast.
"The Antennae" Fall Into Line
A spectacular pair of colliding galaxies starts to make better sense.
Sky at a Glance | May 2nd, 2008
In the western evening sky, Mars, Pollux, and Castor form up into a straight line and then start curving again. Higher in the southwest, Saturn and Regulus are paired their closest. And on May 4th and 5th, you can try to catch rare opposing crescent moons.
How Type-Ia Supernovae Work: The Movie
You thought an exploding star would be simple? Hah.
Examining the Throat of a Black-Hole Jet
How do black holes squirt away jets of matter at nearly the speed of light? Now we know!
Polaris's Pulsations Pick Up
The North Star, slightly variable in brightness, continues to confound expectations.
Hubble's Colliding Galaxies
No two galaxy collisions are alike, as shown in 59 weird images just released by the Hubble Heritage Project.
VISTA Survey Nears the Starting Line
A giant telescope with a deeply curved mirror is on its way to revolutionizing our view of the infrared sky.
Sky at a Glance | April 18th, 2008
The eyecatcher of the evening sky is the Saturn-Regulus pair high in the south. Or maybe you'd give that award to the Mars-Pollux-Castor triangle high in the west. And using both of these bright sights, do you know how to find the Head of Hydra?
Sky at a Glance | April 11th, 2008
Saturn and Regulus form an ever closer pair high in the evening sky, while Gamma Leonis looks on from their north. The Moon joins the scene on Monday and Tuesday. Meanwhile, Jupiter glares off by its lonesome before dawn.
The First Type-Y Star?
It's the coolest brown dwarf yet, and it seems to be in a spectral class of its own.
Sky at a Glance | April 4th, 2008
The Moon meets the Pleiades on Tuesday the 8th. Saturn shines with Regulus in an eye-catching pair all month. And when can you last see Venus low in the dawn?
A Raft of New Planets in Silhouette
The SuperWASP project finds 10 new extrasolar planets crossing the faces of their stars.
Sky at a Glance | March 28th, 2008
Have you compared the colors of Mars and Betelgeuse? They're one above the other just now. Meanwhile Saturn shines with Regulus in an eye-catching pair, and Jupiter and the waning Moon light the dawn. Also, don't miss out on this week's Space Station flyovers.
A Record-Breaking Gamma-Ray Burst
The visible-light glow of a gamma-ray burst briefly shone at magnitude 5.4, despite its distance of 7.5 billion light-years — more than halfway across the visible universe.
