Prominences are huge plumes of glowing gas that can extend over 50,000 km from the Sun's surface, erupting for minutes to hours and sending material into space. They can remain trapped in magnetic fields for weeks, glowing the entire time. Solar flares are brief but bright eruptions in the chromosphere that are related to sunspots and can twist magnetic fields, while coronal mass ejections are larger bursts of plasma and fields that shoot off the surface and sometimes hit Earth, causing auroras and disruptions to technology.