Cloud Number — Nine

To be on "cloud nine" meant you were on the tallest cloud in existence, physically and metaphorically "on top of the world". cloud nine - Wiktionary, the free dictionary

Floating on Cloud Number Nine: From Science to Song The phrase "on cloud nine" (or sometimes "cloud number nine") is more than just a catchy idiom for extreme happiness. It is a linguistic artifact that bridges the worlds of 19th-century meteorology, diverse cultural traditions, and modern pop music. The Scientific Roots: Scaling the Skies Cloud Number Nine

In this standardized list of ten cloud types, the ninth was the cumulonimbus . To be on "cloud nine" meant you were

The most widely accepted origin story for the phrase traces back to the first edition of the in 1896. The Scientific Roots: Scaling the Skies In this

Cumulonimbus clouds are towering giants that can reach altitudes of 10 kilometers (over 30,000 feet), making them the highest-reaching clouds in the atmosphere.