Scientists estimate wind speed topping 5,400 mph for exoplanet HD 189733b

Scientists have calculated the speed of the wind on the two sides of the exoplanet and discovered a powerful wind gusting at over 5,400mph from the planet’s day side to the night side.

The wind was twenty times faster as compared to the highest wind speeds that have been ever recorded on the planet Earth.

Researchers detailed the atmosphere of the exoplanet by plotting sodium atoms’ absorption of the host star’s radiation. They are hopeful that these techniques can be helpful in imaging weather systems on Earth-like planets.

They gathered the data using the High Accuracy Radial Velocity Planet Searcher, a telescope in La Silla, Chile.

The discovery done by the University of Warwick is the first time ever that a weather system on a planet outside the solar system of the Earth has been measured and mapped directly.

Team member Tom Louden of the University of Warwick said, “The surface of the star is brighter at the centre than it is at the edge, so as the planet moves in front of the star the relative amount of light blocked by different parts of the atmosphere changes”.

Researchers examined HD 189733b, which was found in 2005 transiting the star HD 189733, lying a few 63 light years away from Earth in the constellation Vulpecula. They disclosed that the mass of the planet was around 13% greater than that of Jupiter, but also mentioned that it’s 180 times closer to its sun as compared to our own gas monster. This could prove helpful in pinpointing that particularly which planets have weather that could be hospitable for life.