Different types of benign, or noncancerous, adrenal tumors prove a frequent cause of enlargement of the gland. Adrenal adenomas remain the most common type of benign adrenal tumors, representing over 50 percent of adrenal masses. Uncommon benign adrenal tumors include adrenal cysts and lipomas, or fat-derived tumors.
The Sun provides the energy for the aurora, but particles in the. aurora come from Earthâs own neighborhood in space. The Sunâs. energy is carried toward the Earth in the solar wind, a stream of. electrically charged particles (mostly protons and electrons) ïow-. ing out from the Sun in all directions.
The aurora borealis is also called the northern lights. The aurora borealis most often occurs from September to October and March to April. Its southern counterpart, aurora australis, has similar properties. The cause of the aurora is charged particles from the solar wind, accelerated by the Earth's magnetic field, colliding with atoms in the upper atmosphere causing them to glow as they release their surplus energy.