A magnetar is a neutron star with a magnetic field greater than any other star in the universe. Same as any other neutron star, a magnetar is approximately 20 km wide and has mass many times the mass of the sun. When a big star undergoes supernova it either becomes a black hole or a neutron star. A magnetar is an exotic type of neutron star which has an enormous mass, it is thought that a tablespoon of the surface of magnetar or neutron star will be equal to the millions of tons of mass of matter. A magnetar releases a huge amount of electromagnetic radiation and gamma-ray bursts(GRBs) in space when there is a sudden change at its core popularly known as the starquake. Illustration of Magnetar A magnetar roughly 4000 light-years can wipe out the whole life form we know on earth. The magnetic field of the magnetar can damage all electronic circuits, grids, and satellites orbiting the earth, and in no matter of time, our whole communication system will be destroyed...
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