Astronomers have discovered a two-faced star and are baffled by its bizarre appearance.
The white dwarf appears to have one side composed almost entirely of hydrogen and the other side made up of helium. It is the first time that astronomers have discovered a lone star that appears to have spontaneously developed two contrasting faces.
“The surface of the white dwarf completely changes from one side to the other,” said Dr Ilaria Caiazzo, an astrophysicist at Caltech who led the work. “When I show the observations to people, they are blown away.”
