Today’s physics news: Friday, 29 October 2010

Our galaxy may contain billions of planets with the same mass as Earth and hints of lightweight dark matter particle found in space

Our galaxy may contain billions of planets with the same mass as Earth
A planet census suggests that there are 50bn with the same mass as Earth and that around a fifth of these have liquid water
Guardian
Times
BBC
Physics World 
 
Hints of lightweight dark matter particle found in space
Hints of a lightweight dark matter particle have been found in the gamma-ray glow at the Milky Way’s heart.
New Scientist