Have you ever seen small dipper or Ursa minor in the clear night sky if not you must have heard about it? It is a constellation that consists of seven stars including the pole star or north star. Ursa minor or little bear is a constellation beside the Ursa major which can be seen from the latitude of +90 to -10 degrees and lies in the third quadrant of the northern sky. It comprises of seven major stars. The four stars make the ladle structure while the other stars make the handle. It is known that little dipper was one of the 48 constellations discovered by the Greek astronomer and mathematician Ptolemy and now is one of the 88 constellations that mankind knows. The Ursa minor is helping many sailors, travelers, and lost people for ages to navigate them because of the pole star present at the tip of its tail. It is the brightest star in the constellation. If you are standing at the north pole then the Polaris will be right above your head. Ursa Major in the night sky
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 furtherm