One Promising Puzzle Piece for Confirming Dark Matter Now Seems Unlikely Fit
Wednesday, November 30, 2011 - 00:01
in Astronomy & Space
In 2008, the Italian satellite PAMELA detected a curious excess of antimatter positrons - a startling discovery that could have been a sign of the existence of dark matter. With assistance from the Earth's magnetic field, the Fermi Gamma-ray Telescope confirms a cosmic excess of antimatter positrons, but not the spike expected if evidence of dark matter.