Mystery particle may explain extreme X-rays shooting from the ‘Magnificent 7’ stars

More than 400 light-years from Earth, there is a cluster of young neutron stars that are too hot for their age. These stars, known as the “Magnificent Seven,” emit a stream of ultra-high-energy X-rays that scientists haven’t been able to explain. 

Now, scientists have proposed a possible culprit: axions, theoretical particles that turn into light particles when they are in the presence of a magnetic field

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