Photometric measurements of numerous background stars are combined with simultaneous sky brightness measurements to differentiate thin clouds from sky glow sources such as airglow and zodiacal light.

Kelvin Helmholtz clouds are named after the two scientists who studied the physics behind them A rare cloud formation resembling waves in the sky has been seen across North Yorkshire. The billowy ...

A rare cloud formation resembling waves in the sky has been seen across North Yorkshire ... Known as Kelvin-Helmholtz clouds, they form when a faster stream of air moves above rising air below.

Rare clouds have brought a stunning sunrise to parts of England and Wales with the skies looking reminiscent of a display by the world famous 'Red Arrows'. These high clouds are called Cirrus ...

With the air as his canvas, a Dutch artist applies water vapor, smoke, lighting—and conjures clouds in surprising ... in gallery spaces include a sky-grazing cloud at the De Groen Fine Art ...

Pink and red hues could light up the Bay Area sky Wednesday as scattered clouds provide ideal ingredients for a colorful sunrise and sunset. A meandering low-pressure system off the Central Coast will ...

Stunning timelapse footage captured storm clouds churning in the darkening sky over north Texas on Tuesday, March 25. Photographer Matt Lantz filmed this footage from his house in Aledo. “Strong ...

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People across Wales looked to sky on Thursday and saw the usually grey clouds lit up with a pink glow. Particles in the atmosphere can scatter sunlight, allowing us to see certain colours more ...