Topic: Dimitar Sasselov
For a planet to support life, it faces long odds: It has to be the right size, right composition, and right distance from its star. On Monday astronomers announced a trove of new planet 'candidates.'
09/12/2011 09:27 pm
By gauging the subtle differences in light given off by a planet 1,000 light-years away, it shows that it's up to the job.
08/07/2009 01:00 am
New, stronger telescopes could examine millions of stars within a generation.
02/21/2008 12:00 am