Supersonic Winds On A Nearby Exoplanet Break All Speed Records - Earth.Com

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Astronomers have uncovered a remarkable wind phenomenon on WASP-127b, a gas giant planet that is more than 500 light-years from Earth.

This discovery marks the fastest jetstream ever measured on any known planet and sheds new light on the complex and extreme weather patterns of exoplanets beyond our Solar System.

WASP-127b has fascinated scientists since its discovery in 2016. The planet is slightly larger than Jupiter but has a much lower mass, making it a ⁘puffy⁘ gas giant . Its low density suggests that its atmosphere is vastly extended, allowing astronomers to study its composition and climate with relative ease.

Unlike Earth, where storms and winds are driven by temperature differences and planetary rotation, the weather on WASP-127b is governed by far more extreme forces.

This setup leads to dramatic atmospheric conditions, including intense winds that redistribute heat around the planet . However, the sheer velocity of these winds came as a complete surprise to researchers.

"Part of the atmosphere of this planet is moving towards us at a high velocity while another part is moving away from us at the same speed. This signal shows us that there is a very fast, supersonic, jet wind around the planet's equator," noted Lisa Nortmann, a scientist at the University of Göttingen in Germany and lead author of the study.

The winds reach a staggering speed of 9 kilometers per second, which is nearly six times faster than the expected rotation speed of the planet .