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Briefing: XRISM identifies gamma Cas X-ray origin, solving a 50-year-old stellar mystery

Editorial Staff · March 24, 2026 · 1 min read

γ Cas is visible to the naked eye in the constellation Cassiopeia.

The star has puzzled scientists for 50 years due to its unusual X-ray emissions.

XRISM's findings provide clarity on the star's intense and high-temperature X-ray output.