The nearby star’s envelope slowed due to a giant volcanic eruption, astronomers say

A dead star’s rapidly rotating envelope has mysteriously slowed, and astronomers believe it’s due to an “anti-glitch” that caused a gigantic volcano-like explosion from its surface.

The dead star, a magnetar classified as SGR 1935+2154 located 30,000 light-years from Earth, suddenly slowed in October 2020 before unleashing a month-long barrage of radio waves. Well, a new study published Jan. 12 in the journal Nature Astronomy (opens in new tab)has uncovered the likely cause: a violent eruption from the surface of the star corpse.

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