Topic: David Spergel
A team of scientists, using NASA's Fermi Gamma-ray Space Telescope, says a pair of puzzling bubbles gets in the way of their quest to search for dark matter at the core of the Milky Way.
11/10/2010 05:58 pm
Milky Way bubbles: The mysterious structures each span 25,000 light-years across, meaning that together they cover more than half the area of the visible sky, and are emitting gamma rays, the highest-energy wavelength of light.
11/09/2010 07:57 pm
The Secret Science Club meets once a month, drawing lofty speakers and large numbers of young people, who yearn to discuss sci-tech issues in an informal setting.
03/04/2009 12:00 am
A study shows it stifles galaxy growth as it helps expand the universe.
12/18/2008 12:00 am
12/16/2008 12:00 am