This artist’s impression shows the exotic double object that consists of a tiny, but very heavy neutron star that spins 25 times each second, orbited every two and a half hours by a white dwarf star. As the pulsar is so small the relative sizes of the two objects are not drawn to scale. – ESO/L. Calçada

Related channels: STARS, QUASARS, NEUTRON STARS, BLACK HOLES, GALAXIES, ASTRONOMY