The spikes of superheated gas, called plasma, are small compared to many of the Sun’s prominent features, such as giant loops of magnetic energy that are flung many thousands of miles into the solar atmosphere. The spicules are typically 300 miles (480 km) in diameter and shoot a relatively modest 3,000 miles (4,830 km) above the Sun’s surface. They scream upward at 50,000 mph (22 kps) and then vanish within five minutes, making them hard to study.
Photo Credit: K. Reardon (Osservatorio Astrofisico di Arcetri, INAF) IBIS,DST, NSO)