[caption id="attachment_2549" align="alignright" width="300"]
Bright swaths of red and green, known as airglow, are visible in this visualization of Earth's limb with the SES-14 satellite and GOLD rising above it. Airglow occurs when gases in the upper atmosphere become charged by the Sun's radiation, emitting light. By measuring...
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![](https://gold.cs.ucf.edu/wp-content/uploads/2018/01/GOLD-beauty-shot-300x169.png)