(WFLA) — Stargazers in parts of Europe were stunned by an unusual sight on Monday evening: a large, glowing blue ... clouds that appear to glow in the central Florida sky.

A SpaceX rocket launch from Florida on Monday afternoon produced a dazzling display in the night sky above Europe ... it produced a mesmerizing blue spiral that left many Europeans scratching ...

They are usually found at altitudes above 20,000 feet and are composed ... This scattering makes them look bright and white against the blue sky. However, clouds can appear gray or dark when ...