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By making observations on a binary system of pulsars a team of researchers from the McGill University in Montreal measured for the first time the spin precession of a celestial body located outside the solar system. Pulsars are a type of neutron stars with strong magnetic fields, emitting electromagnetic radiation through the poles. Most of the time they are found in systems, orbiting other companions and because they also have strong gravitational fields, pulsars can be used to test several of ... Read »