In meteorology, wind speed, or wind flow speed, is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature. Wind speed is now commonly
An anemometer is commonly used to measure wind speed.
The original anemometer that measured The Big Wind in 1934 at Mount Washington Observatory
FT742-DM acoustic resonance wind sensor, one of the instruments now used to measure wind speed at Mount Washington Observatory
Anemometer on an outdoor stage set, to measure wind speed
HD 189733 b is an exoplanet in the constellation of Vulpecula approximately 64.5 light-years away from the Solar System. Astronomers in France discovered the planet orbiting the star HD 189733 on Octo
Wind speed
…radar are not considered official records. Wind speeds can be much higher on exoplanets. Scientists at the University of Warwick in 2015 determined that HD 189733b has winds of 2,400 m/s (8,600 km/h; 4,700 kn; 7,900 ft/s; 5,400 mph). In a press release, the University announced that the methods used from measuring…
The infrared spectrum of HD 189733 b
An artist's conception of HD 189733 b following the 2013 confirmation of the planet's blue color by the Hubble Space Telescope. The appearance of HD 189733 b beyond the blue color is unknown.
An artist's impression of HD 189733 b showing rapid evaporation of the atmosphere
Comparison of "hot Jupiter" exoplanets (artist concept). From top left to lower right: WASP-12b, WASP-6b, WASP-31b, WASP-39b, HD 189733 b, HAT-P-12b, WASP-17b, WASP-19b, HAT-P-1b and HD 209458 b.