The Secrets behind Earth's Multi-colored Glow

Airglow is a faint glow in the night sky, visible only in the absence of light pollution. It forms a luminous bubble around Earth and provides insights into atmospheric and space weather interactions. The ionosphere, where airglow occurs, is a dynamic region influenced by solar and terrestrial weather. Airglow results from energized atmospheric molecules emitting light, with variations in color and intensity revealing information about the upper atmosphere's composition and conditions. NASA studies airglow to understand the interconnectedness of space and Earth's weather.

Explain why airglow is primarily observed in the upper atmosphere.

What information can be derived from the different types of airglow?