(PhysOrg.com) -- “We know that about 25% of the matter in the universe is dark matter, but we don’t know what it is,” Michael Kesden tells PhysOrg.com. “There are a number of different theories about what da ...

Physics - General Physics

Sep 21, 2011 4.1 / 5 (27) 48 |

(PhysOrg.com) -- The primary objective of NASA’s Kepler satellite, which was launched in March 2009 to orbit the Sun, is to search for Earth-like planets in a portion of the Milky Way galaxy. But now ...

Physics - General Physics

Dec 09, 2011 5 / 5 (19) 46 |