Coronal Loops: The Sun's Magnetic Dance

The Sun, our nearest star, is a cauldron of constant activity, and among its most spectacular displays are coronal loops.

What are Coronal Loops?

Our Sun frequently erupts in loops. Hot solar plasma jumps off the Sun's surface into prominences. The most common type of prominence is a simple loop. This characteristic shape originates from the Sun's powerful magnetic field, which guides the spiraling electrons and protons.

Size and Stability

Many of these loops, extending into the Sun's lower corona, are colossal. They can be large enough to completely envelop the Earth and are surprisingly stable, often lasting for days. These impressive structures commonly appear near active regions, areas on the Sun that also host dark sunspots.

Capturing the Phenomenon

The featured panel showcases four such loops, each captured near the Sun's edge during 2024 and 2025. These stunning images were taken by a personal telescope located in Mantova, Italy. The photographer utilized a very specific color of light, primarily emitted by hydrogen, to highlight these solar features.

Impact on Space Weather

While beautiful, these solar prominences aren't just for show. Some can suddenly break open, ejecting a stream of particles into the Solar System. This event can trigger space weather sequences that have the potential to affect Earth's atmosphere and even our electrical infrastructure.