Posts by 

Raúl Cortés

Sun

Sun news: Surprise geomagnetic storm hits overnight

Sun news for June 25, 2026: A surprise G1 (minor) geomagnetic storm hit overnight! More storming is possible through June 27.
Sun

Sun activity archive for May 2026

Sun activity archive for May 2026. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Sun activity archive for April 2026

Sun activity archive for April 2026. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Russell-McPherron effect gives us an aurora season: More auroras at equinoxes

There's an aurora season around the equinoxes, due to the way the magnetic fields of the sun and the Earth work in conjunction with sun-Earth geometry.
Sun

Sun activity archive for March 2026

Sun activity archive for March 2026. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Sun activity archive for February 2026

Sun activity archive for February 2026. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Sun activity archive for January 2026

Sun activity archive for January 2026. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Sun activity archive for December 2025

Sun activity archive for December 2025. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Sun activity archive for November 2025

Sun activity archive for November 2025. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
Sun

Sun activity archive for October 2025

Sun activity archive for October 2025. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.

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