Posts by 

Raúl Cortés

Sun

Sun news: Auroras tonight? Sun-stuff and solar wind incoming

Sun news, October 13, 2026: Fast solar wind from a coronal hole and a burst of sun-stuff might trigger G2 (moderate) storms and auroras tonight.
Sun

Yes, there’s an aurora season, and it’s here

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 September 2026

Sun news September 30: Near-M flare! Sun waking up? Our star surprised us again over the past day. This time...
Sun

Sun activity archive for August 2026

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

Sun activity archive for July 2026

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

Sun activity archive for June 2026

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

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.