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Solar Activity

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New X4.2 Solar Flare Erupts From AR4366 as Earlier CME Nears Earth

Forecasters expect a glancing CME to bring minor geomagnetic storm conditions.

Corrected Qufu Coordinates Confirm 709 BCE Total Eclipse, Tighten ΔT Estimates

Peer-Reviewed Study Details How 2024 G5 Superstorm Crushed Earth’s Plasmasphere

Study Finds Solar Flares Superheat Ions 6.5 Times More Than Electrons

Solar Orbiter Study Separates Fast Solar Electrons Into Flare and CME Origins

Parker Solar Probe Confirms Long-Standing Solar Reconnection Theory In Situ

NASA Releases Closest-Ever Images of the Sun From Parker Solar Probe