AI summary: Astronomers have discovered a unique white dwarf star, named Janus, with each side composed of different elements – one of hydrogen and the other of helium. This unprecedented find, over 1300 light years away, could provide insights into the mysterious phase of white dwarf evolution. The star’s unusual composition is possibly linked to an uneven magnetic field, although the exact mechanism remains unclear. The discovery of Janus, which appears to be a rare occurrence in the cosmos, could unlock new understanding of stellar dynamics.
Read more at New Scientist…