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  "path": "/releases/2026/05/260501052856.htm",
  "publishedAt": "2026-05-01T23:43:17.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "A decades-old cosmic mystery has finally been cracked: the strange X-rays coming from the bright star gamma-Cas are caused by a hidden stellar companion feeding off it. Using cutting-edge observations from the XRISM space mission, astronomers discovered that an unseen white dwarf star is siphoning material from gamma-Cas, heating it to extreme temperatures and producing powerful X-ray emissions. This breakthrough resolves a puzzle that has baffled scientists since the 1970s and sheds new light on how these unusual stellar pairs form and evolve.",
  "title": "Astronomers finally solve the gamma-Cas X-ray mystery after 50 years"
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