Astronomers have been watching one of the nearest pulsars to Earth, dubbed Geminga, in the belief it might offer some clues to a question that’s puzzled scientists for some time.

Astronomers may have finally found the answer to a question that has long puzzled them, according to a new study, the results of which were published in Physical Review D on 17 December 2019.

The research, titled “Detection of a gamma-ray halo around Geminga with the Fermi-LAT data and implications for the positron flux”, sheds light on the reason for the presence of an abundance of anti-matter near Earth – something that has been a mystery for about a decade.

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