reflect sunlight from below the horizon, creating the appearance of glowing clouds against the dark sky. Noctilucent clouds form approximately 50 miles above Earth's surface, making them visible ...

On Wednesday morning over the Florida sky, we got to witness this amazing glow due ... As the sun dips below the horizon, its rays continue to illuminate these high-altitude clouds, while the ...

The timing is important: before sunrise, the sun remains below the horizon for ground observers but shines on these high-altitude ice crystals. This causes the clouds to glow with an ethereal ...