ciencia-natureza
50-Year X-Ray Mystery of Gamma-Cas Finally Solved: The Culprit Was an Invisible White Dwarf
Astronomers used the XRISM telescope to identify the source of anomalous X-rays from the star gamma-Cassiopeiae. A hidden white dwarf was the culprit behind emissions 40 times stronger than expected.
⏱️ 11 min📅 2026-04-17