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Astronomers discover how super-dense ‘magnetars’ are formed

Astronomers said Wednesday they may have found the answer to a cosmic riddle called the magnetar — a star so dense that just a teaspoonful of it would have a mass of about a billion tonnes. Magnetars are mysterious phenomena whose magnetic fields are millions of times greater than that…

Magnetic mega-star challenges black hole theory

A neutron star with a mighty magnetic field has thrown down the gauntlet to theories about stellar evolution and the birth of black holes, astronomers reported on Wednesday. The “magnetar” lies in a cluster of stars known as Westerlund 1, located 16,000 light years away in the constellation of Ara,…