Secrets of the glowing night sky

The science behind Earth's natural night glow

Solar ultraviolet light breaks atmospheric molecules by day, triggering chemiluminescence that produces a glowing night sky known as airglow.

Why the Night Sky Glows in the Dark

Airglow separates into distinct altitude bands, forming a luminous green sheet at 100 kilometers and a red veil stretching up to 300 kilometers.

Earth's Glowing Atmospheric Layers Explained

Earth's magnetic weak spot lights up the sky

The South Atlantic Anomaly weakens Earth's protective magnetic field, allowing extra solar particles to ignite brilliant airglow and atmospheric gravity waves.

The Magnetic Anomaly Making the Sky Glow

The 11-year solar cycle controls night sky brightness

Periodic spikes in the 11-year solar cycle boost airglow intensity, creating vivid nocturnal displays picked up by modern sensitive sensors.

The 11-Year Solar Cycle That Lights Up the Night

[00:50] Why the Night Sky Glows in the Dark
[02:05] Earth's Glowing Atmospheric Layers Explained
[02:48] The Magnetic Anomaly Making the Sky Glow
[04:10] The 11-Year Solar Cycle That Lights Up the Night

Secrets of the glowing night sky

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