A variety of new findings point to the "habitable zones" where we're likely to find extraterrestrials. 05.11.2009
At last we are finding rocky planets like our own. But some are pretty weird: The smallest may have a mineral-vapor atmosphere that condenses as lava rain or rock snow. 05.07.2009
Neil deGrasse Tyson, Area 51, modern life vs human nature, and more 02.20.2009
Astrobiologist Maggie Turnbull gets paid by NASA to search for alien life. 02.03.2009
Astronomers have recently found hundreds of new planets. Here are what some of them might look like. 01.23.2009
Alan Boss has spent a career predicting how stars and planets form—and has often been right. 01.12.2009
Hawaii's Mauna Kea houses the world’s largest astronomical observatory. 01.09.2009
We are only beginning to discover how vast and strange our solar system truly is. 01.06.2009
The latest, newest protoplanet is a "dusty, rocky, gaseous lump." 12.17.2008
Young innovators are changing everything from theoretical mathematics to cancer therapy. 11.20.2008
Researchers are racing to find the first planet that might support life as we know it. 10.10.2008
It starts with water and ends with intelligent aliens—hopefully. 12.25.2007
A new crop of alien planets raises the bar on bizarre. 12.12.2007
His research heats up the search for alien life—and finds some amazing planets along the way. 12.06.2007
New-found worlds are becoming bigger, hotter, and stranger. 11.27.2007
Fifty years after Sputnik, Burt Rutan leads a new space race. 10.08.2007
Newly discovered Eris is bigger and heavier than the spurned planet. 08.16.2007
A planet with supersonic winds, where a day lasts a year 07.16.2007
We could hit the jackpot by 2010. 04.10.2007
Give Caltech astronomer Mike Brown a telescope and there's no telling what he might discover out there 05.27.2006
Planet Xena, cosmic evolution, gamma ray bursts, and more. 01.08.2006
05.01.2005
09.30.2004
02.05.2004
01.02.2004
The Astronomers Who Proved Carl Sagan Correct 11.09.2003
03.01.2003
NASA is betting that we can, and a team of Princeton astronomers has a clever design for a telescope that could do it within 20 years 03.01.2002
When it's a planet that's not a planet 01.01.2002
08.01.2001
12.01.2000
Amazing Worlds beyond our own Solar System 03.01.2000
Is it the first planet seen outside our solar system, or something completely different? 08.01.1998
12.01.1997
01.01.1997
04.01.1996
03.01.1996
Brown dwarfs are the missing link between normal stars and planets. 01.01.1996
01.01.1996
Surely, out of the countless spheres in the universe, one harbors something that can say hello. 11.01.1992
Astronomers have looked long and hard for planets outside the solar system. At last their search may have paid off. 04.01.1992