These Mesmerizing Clouds Are at a 15-Year High, and SpaceX May Be the Reason - CNET

Water vapor from Falcon 9 engines might be creating more of the most distinctive clouds on Earth.

High altitude clouds have been forming in recent days at the highest rates seen since 2007. Rocket exhaust may be the cause, but climate change is also known to make the clouds more visible. Noct… [+3548 chars]

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