Astronomers have been left 'baffled' by the discovery of a two-faced star – with one side composed of hydrogen and the other made up of helium. Nicknamed Janus after the two-faced Roman god of ...
In a first for white dwarfs, the burnt-out cores of dead stars, astronomers have discovered that at least one member of this cosmic family is two-faced. One side of the white dwarf is composed of ...
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