Solar filament

A solar filament is a large, elongated cloud of cooler, dense solar material suspended above the Sun's surface by magnetic forces. These structures can stretch for hundreds of thousands of kilometers and are often visible as dark lines when viewed against the solar disk.

Source: solarscience.msfc.nasa.gov

APODs including "Solar filament"

Prominences and Filaments on the Active Sun

15/06/2024

A Solar Filament Erupts

26/05/2024

A Long Snaking Filament on the Sun

13/09/2022

Filaprom on the Western Limb

24/06/2022

Pixels in the Sun

26/06/2021

A Solar Filament Erupts

16/09/2018