What is a violent storm on the sun that has a huge clouds of large bright loops or arches of gas?

A violent storm on the sun characterized by large, bright loops or arches of gas is known as a solar prominence. These formations are composed of plasma and can extend thousands of kilometers into space, often appearing in bright, looped shapes due to the sun's magnetic fields. Prominences can be associated with solar flares and coronal mass ejections, which can impact space weather and affect satellites and communication on Earth.