Researchers have analyzed fragments from 2008 TC3, the first asteroid ever tracked during its descent. (p. 9)

MESSENGER flew past Mercury for a third time on September 29. The spacecraft's mission will continue, with MESSENGER due to settle into a yearlong orbit around Mercury in March 2011. (p. 10)

Astronomy’s multiwavelength revolution paints a more complete picture of the cosmos (p. 16)

The moon isn’t bone-dry: Its surface and interior contain an abundance of water, new studies reveal. (p. 10)

Cassini’s portraits of the equinox on Saturn are revealing new features about the planet’s icy rings.

GigaGalaxy zoom project images Milky Way’s hub.

Using a new camera on the Hubble Space Telescope, astronomers have found what appear to be the most distant known galaxies in the universe. (p. 8)

Researchers have found the first compelling evidence for a rocky planet beyond the solar system. (p. 8)

A newly released portrait of the cosmos provides a 360-degree, human’s-eye view of the entire sky.

Researchers have discovered fog just above Saturn’s moon Titan, indicating how methane cycles between the atmosphere and the surface of the moon.

Newly released images provide graphic evidence that repairs have transformed the Hubble Space Telescope into a brand new observatory. (p. 7)

Panel suggests how to get human spaceflight program off the ground. (p. 9)

An asymmetry that the standard model of particle physics may not account for hints at the existence of a new and massive elementary particle. (p. 7)