Add Yahoo as a preferred source to see more of our stories on Google. The Sun's activity levels fluctuate on an 11-year cycle. (Javier Zayas Photography/Moment/Getty ...

Internal changes due to the Sun’s ‘active biorhythm’ have become increasingly ‘skin-deep’ over the past four solar activity cycles, according to a new study. Publishing its findings today (28 May) in ...

Skywatchers across the northern United States and parts of Europe have had far more chances to see the aurora over the past ...

Ancient auroras are unlocking secrets of solar activity, offering scientists a glimpse into the Sun's behavior long before ...

Every eleven years, the sun's magnetic field flips. Sunspots—dark, cooler regions on the sun's surface that mark intense magnetic activity and often trigger solar eruptions—appear at mid-latitudes and ...

The solar cycle can be irregular, but some patterns might be trackable—enough to provide a heads-up before extreme weather events. Reading time 3 minutes We’ve monitored the Sun’s cycles for centuries ...

Scientists have developed a new way to predict the strength of the sun's next activity cycle up to seven years before it reaches its peak. The new method uses the number of sunspots at a newly ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

G1 geomagnetic storm September 2026: Two large coronal holes in Earth-facing positions are sending back-to-back solar wind ...

Last month, Earth was treated to a massive aurora borealis that reached as far south as Texas. The event was attributed to a solar storm that lasted nearly a full day and will likely contend for the ...