For the first time U.S. scientists matched a meteorite found on Earth with a specific asteroid that became a fireball plunging through the sky. It gives them a glimpse into the past when planets formed and an idea how to avoid a future asteroid Armageddon. ...more

March 26, 2009

"The Pluto Files: The Rise and Fall of America's Favorite Planet," by Neil DeGrasse Tyson (Norton, $23.95) ...more

February 22, 2009

Astronomers have discovered what may be the smallest alien planet yet - a rocky "super-Earth" only four times heavier than our home planet. ...more

May 31, 2008

Astronomers took pictures of a far-off lumpy galaxy just forming 13 billion years ago, putting it among the earliest and most distant cosmic objects ever photographed. ...more

February 13, 2008

Peruvian astronomers said Thursday that evidence shows a meteorite crashed near Lake Titicaca over the weekend, leaving an elliptical crater and magnetic rock fragments in an impact powerful enough to register on seismic charts. ...more

September 21, 2007