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[Atmosphere, atmosphere ... ] 33,000 km/h, i.e. 9 km/sec! This is the speed of the #winds in the jet stream that encircles the equator of #exoplanet WASP-127b, a gas giant located some 520 light-years from Earth. Molecules of water vapor and carbon monoxide were also detected within this planetary #atmosphere.

The extreme meteorological conditions prevailing on the surface of WASP-127b were deduced from measurements made using the CRIRES+ instrument installed on the Very Large Telescope (VLT) of the @esoastronomy (ESO).

Details+ : https://www.irap.omp.eu/en/2025/01/extreme-supersonic-winds-measured-on-planet-outside-our-solar-system/

#astronomy #astrophysics #exoplanet
This artist’s visualisation of WASP-127b, a giant gas planet located about 520 light-years from Earth, shows its newly discovered supersonic jet winds that move around the planet’s equator. With a speed of 9 km per second (33 000 km/h), this is the fastest jetstream of its kind ever measured in the Universe. By tracking the speed of molecules in the atmosphere with the CRIRES+ instrument on ESO’s Very Large Telescope, researchers found that one side of the planet’s atmosphere is moving towards us and the other away from us. This indicates that there is a powerful wind current going around the planet. Credit:ESO/L. Calçada
#astronomy #atmosphere #astrophysics #winds #exoplanet @ESO
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