A cluster of ancient stars at the outskirts of spiral galaxy M81 is the source of extraordinarily bright and short radio flashes.
“A baby shower in a retirement home – that would surely raise some eyebrows. Likewise, astronomers were surprised to find a fast radio burst in a globular cluster. Astronomers think the enigmatic, millisecond-duration flashes of radio waves arise on newborn neutron stars. However, the stars in globular clusters are almost as old as the universe itself. ... Fast radio bursts (FRBs) were first discovered in 2007. In about one-thousandth of a second, they release as much energy as the Sun does in days. ...”
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