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  "path": "/releases/2026/03/260325041723.htm",
  "publishedAt": "2026-03-25T04:51:37.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "A star you can see with the naked eye has kept astronomers guessing for decades with its unusually powerful X-rays. Now, thanks to highly precise observations from Japan’s XRISM space telescope, scientists have finally uncovered the source: a hidden white dwarf companion pulling in material and generating extreme heat. This discovery not only solves a 50-year-old mystery surrounding Gamma Cassiopeiae, but also confirms the existence of a long-predicted type of binary star system.",
  "title": "Astronomers solve 50-year mystery of a naked-eye star’s extreme X-rays"
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