The Dance of Light: Understanding Earth's Aurora Phenomenon
An aurora is a natural light display in Earth's upper atmosphere created when charged particles from the Sun collide with atmospheric atoms, producing colorful curtains and rays of light. These phenomena occur in high-latitude regions around both magnetic poles, driven by disturbances in Earth's magnetosphere caused by solar wind activity.
Aurora displays range from subtle green glows near the horizon to dramatic multicolored curtains stretching across the entire sky. The colors—green from oxygen at 60–150 miles altitude, red from higher oxygen atoms, blue and purple from nitrogen—paint the darkness in patterns that have inspired mythology across Indigenous and Nordic cultures for millennia.
“In 1859, the Carrington Event produced auroras so vivid that people in Boston could read newspapers outdoors at one o'clock in the morning.”
