SUNSET: 
Name That Telescope Array
Have a gift for picking good names? The newly updated Very Large Array wants a snazzy appellation to mark its second lease on life. Submit your suggestion by December 1st.
Cygnus X-1, Exactly
Astronomers have pinned down the distance, mass, and spin rate for the first black hole candidate discovered, information that points to a birth sans supernova.
If An Impact Looms, Then What?
A group of scientists, policy-makers, and science journalists recently tackled the tough who-where-how-and-why questions that will have to be answered if astronomers discover an asteroid or comet on a collision course with Earth.
Europa's Subsurface Lakes
Extensive lens-shaped lakes beneath the surface of Jupiter's moon Europa may explain strange features spread across the satellite's ice shell.
EPOXI Offers Do-It-Yourself Imagery
Try your hand at processing raw images of deep-sky object taken by NASA's EPOXI spacecraft.
S&T’s 70th Anniversary Video Is Here!
Watch a behind-the-scenes video of how S&T came to be and what it's like working at the magazine today.
A "Whodunit" of Cosmic Proportions
Most everyone credits Edwin Hubble with discovering that the universe is expanding. But historians believe the honor should really be shared with a lesser-known Belgian priest named Georges Lemaître. So what's the real story?
William T. Clark 1928-2011
The founder of one of the world's best-known manufacturers of observatory domes passed away earlier this month.
Phobos-Grunt's Sad Fate
Russia's first mission in 15 years from a once-proud interplanetary program has ended in failure, as a spacecraft intended to land on a Martian moon was unresponsive and stuck in orbit around Earth after launch, which doomed it to atmospheric annihilation two months later.
The Oddly Magnetic Moon
Astronomers have had evidence of an ancient Moon-wide magnetic field since the Apollo era. Now two new studies give explanations for how such a field could have existed long after it should have disappeared.
Hi-and-Bye Asteroid Creates a Buzz
The asteroid 2005 YU55 flew by last night exactly on track, capturing the attention of professional astronomers around the world and delighting well-prepared backyard observers.
Sunspot Points at Earth
A huge solar blemish mars the Sun’s disk, in perfect view for Earth-based observers.
A Dusty Young Star's "Spiral Arms"
Astronomers have known for decades that the young star SAO 206462 is encircled by a thick dusty disk. However, just-released images from Japan's Subaru Telescope show that the disk sports two wings that make it look like a miniature spiral galaxy.
Skywatch 2012 — A Preview
If you are wondering what's in the skies in 2012, Skywatch is just the magazine for you. This video is a preview of this year's issue. Skywatch is now available on newsstands in the U.S. and Canada.
Chinese Supernova Keeps its Secrets
Astronomers find hints of what kind of explosion caused a "guest star" spotted in ancient skies, but the case isn't closed.
Mini-Asteroid Makes a House Call
You've probably heard by now about 2005 YU55. This quarter-mile-wide asteroid will coast past Earth on the night of November 8–9, shining at 11th magnitude and providing a rare opportunity for professional and amateur observers alike.
Tour November's Sky! | October 28th, 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.
Eris and Pluto: Does Size Matter?
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.
Comet Elenin's Last Gasp
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".
"Blue Stragglers" Renewed by Stealing
Some deceptively youthful stars may find their fountains of youth in material they grab off other stars.
