
Space shuttle Discovery lands in Florida, capping its 39th and final mission
John Matson is a former reporter and editor for Scientific American who has written extensively about astronomy and physics.

Space shuttle Discovery lands in Florida, capping its 39th and final mission

Earthbound: Suitors Await News on Space Shuttle Discovery's Future Home
When Discovery touches down, it will become the first of NASA's three remaining space shuttles to enter retirement. Where will they all end up?

Raze of Glory: NASA Earth-Observing Climate Satellite Fails to Reach Orbit
A launch malfunction sent the Glory satellite crashing into the ocean, almost exactly mimicking the 2009 loss of NASA's Orbiting Carbon Observatory

Minimum to the Max: Shifting Solar Plasma Could Account for Sun's Recent Slumber
A new model for the sun's inner workings may help explain the most recent solar minimum, when sunspots all but disappeared for an unusually long time

U.S. Air Force robotic space plane set for second long-duration flight

Feeling the Heat
Short-lived fountains of plasma may explain why the sun's outer atmosphere is hotter than its surface

Scrivener to the Stars: Keeping Tabs on All the Exoplanets
A Parisian astronomer tells how he became the unofficial record keeper of exoplanets and when we'll stop discovering new ones

Ammonia from meteorites could have aided start of life on Earth

Budget crunch could prematurely shutter Tevatron

Some supermassive black holes may not be so super after all

Beam Bagged: "Reverse Laser" Functions as Near-Perfect Light Absorber
Physicists have constructed a sort of anti-laser, a silicon device that turns very specific kinds of light into energy

Twisted Light Could Enable Black Hole Detection
Rotating black holes should put a spin on the light passing by them, potentially allowing astronomers a new way to gauge their properties

NASA's Stardust spacecraft closes in for a Valentine's Day rendezvous with Comet Tempel 1

Record-setting "near miss" of Earth dramatically shifted tiny asteroid's orbit

Scaled-Down Success: Programmable Logic Tiles Could Form Basis of Nanoprocessors
Tiny circuits assembled from nanowire transistors may someday challenge traditional microchips for small-scale processing tasks

NASA's scrapped Ares 1 rocket could be resurrected for commercial spaceflight

STEREO spacecraft peek at both sides of the sun at once

Opposite Spins: The LHC Accelerates Higgs Search as the U.S. Shutters Its Tevatron
Europe's Large Hadron Collider is extending its unprecedented experimental run as the U.S. prepares for a disappointing shutdown of its marquee collider

Rep. Giffords's husband, astronaut Mark Kelly, plans to command April space shuttle flight

A Wealth of Worlds: Kepler Spacecraft Finds 6 New Exoplanets and Hints at 1,200 More
A newfound planetary system has six worlds, five of which rank among the smallest known, and the list of unconfirmed candidates has swelled to four figures

Retired NFL players more likely than others to misuse prescription painkillers

Where's Saturn? Cassini Spacecraft Helping Provide More Accurate Planetary Coordinates
Astronomers are using the Cassini probe as a distant radio beacon to better pin down the orbit of the giant planet

Crew of 520-day mock Mars mission nears mock landing

NASA memorials mark 25th anniversary of Challenger disaster