Can the most energetic light in the universe point to the most elusive substance in the universe? A new study thinks so. When you purchase through links on our site, we may earn an affiliate ...

Planck is a European Space Agency mission, designed to study the cosmic microwave background (CMB), which ... (though not the identity) of dark matter, and indicated that there's a bit less ...

AMSTERDAM, Netherlands, Dec. 19 (UPI) --The latest analysis of the universe's gamma-ray background has revealed two different source classes but no evidence of dark matter particles. Gamma rays ...