Space Storm Captured by NRL Spurs New Era in CME Research

WASHINGTON, D.C. – Local weather alerts are familiar warnings for potentially dangerous conditions, but an alert that puts all of Earth on warning is rare.

Images from NRL’s LASCO C3 coronagraph showing the ‘halo’ coronal mass ejection that caused the G4 geomagnetic storm on May 31, 2025. NRL’s LASCO instrument has been operating in space since 1996 and helped develop the field of space weather.

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