Spicules

Spikes of gas that rise through the chromosphereRegion immediately above a star’s photosphere. Click on Term to Read More (right). Spicules are rising jets of gas that move upward at ~30 km/sec and last only ~10 minutes.

Cropped from image source: http://spiff.rit.edu/classes/phys230/lectures/sun_gross/sun_gross.html.