David Cont from Ludwig Maximilian University, Munich, Germany, who worked on the study explained: "WASP-127b is a gas giant planet, which means that it has no rocky or solid surface beneath its atmospheric layers.
"Instead, below the observed atmosphere lies gas that becomes denser and more pressurized the deeper one goes into the planet."
To calculate the wind speed on WASP-127b, the team tracked how fast molecules in the planet's atmosphere moved using the 'Very Large Telescope' (VLT) located in the south American country of Chile.
They detected supersonic jet stream winds at its equator howling at around 20,500mph - the fastest of their kind on any known planet.