Event Brief
UPDATED Apr 28, 2026 at 10:00 PM ET
Apr 26, 2026 at 1:02 AM ET
USSR announces Chernobyl power plant explosion in 1986
By The BriefBrief
Swedish scientists detected high radiation levels on April 28, 1986, revealing a reactor explosion two days earlier at Chernobyl.
WHO: Swedish scientists
WHAT: Detection of high radiation levels linked to the Chernobyl reactor explosion
WHEN: Apr 28, 2026 at 9:12 PM ET
WHERE: Chernobyl Nuclear Power Plant, Soviet Ukraine
WHY: High radiation levels were detected, bringing the earlier explosion to light.
How this brief is built: The BriefBrief correlates multiple sources into one evolving event brief, updated as new facts emerge.
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