1. An atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force.
2. The most intense of the several luminous atmospheric lights appearing sometimes at night as streamers or bands of light occurring in the upper atmosphere over the middle and high latitudes and seen most often in the Artic and Antarctic regions.

It is thought to be caused by charged particles from the sun entering the earth's magnetic field and stimulating molecules in the atmosphere.

3. When capitalized, Aurora is the goddess of the dawn, the first light of day.

In Roman mythology, she was the goddess of the dawn; however, in Greek her name was Eos.