Antimatter Anomaly –The Pulsar Geminga

Geminga Pulsar


New research by NASA scientists suggests that Geminga, one of the brightest pulsars located about 800 light-years away in the constellation Gemini, discovered in 1972 by NASA, could be responsible for a decade-long puzzle about why one type of cosmic particle is oddly abundant near Earth. Mattia Di Mauro, an astrophysicist at the Catholic University of America in Washington and NASA’s Goddard Space Flight Center, suggests that the neutron star could provide the solution to a long-standing mystery about the amount of antimatter in our neighborhood: “These are positrons, the antimatter version of electrons, coming from somewhere beyond the solar system.”