Mystery of Cassiopeia star solved after 50 years ⚡ экспресс
Original: "Orbital motion detected in gamma Cas Fe K emission lines"
X-rays from Gamma Cassiopeiae gave away its invisible companion: a white dwarf.
Links in the knowledge graph 1
For fifty years, the star Gamma Cassiopeiae emitted baffling X-rays. The XRISM telescope noticed their source dances in lockstep with an invisible white dwarf. It devours its neighbor's material like a cosmic whirlpool. This will help predict how many such pairs spark cataclysmic blasts.
🎯 A white dwarf is so dense that a sugar-cube-sized chunk of it would outweigh a truck.