Radio Signals From Exoplanet Beta Pictoris b Reveal Magnetic Field 1,000 Times Stronger Than Earth Astronomers used the MeerKAT array to detect radio emissions from exoplanet Beta Pictoris b in 2026, measuring its magnetic field at over 1,000 times stronger than Earth's. Astronomers detected radio waves from an exoplanet for the first time in summer 2026, identifying persistent auroral radio emission from Beta Pictoris b, a gas giant roughly 10 times as massive as Jupiter and located about 63 lightyears away, using the MeerKAT radio telescope array in South Africa. The discovery marks a scientific first: researchers not only found radio signals coming from a planet outside our solar system but also used those signals to measure the planet's magnetic field.According to the data, the magnetic field of Beta Pictoris b is more than 1,000 times stronger than Earth's.Detecting Radio Signals From An ExoplanetRadio signals are essential to virtually all wireless communication on Earth, and many planets and celestial bodies naturally emit their own radio waves. Recent technological advances now allow astronomers to trace the causes of such signals, even for planets orbiting other stars.The MeerKAT array, a radio telescope system of 64 interconnected satellite dishes, is located in Meerkat National Park in South Africa. The facility is named both for the acronym and for the park, which is home to a large meerkat population.Astronomers described the signals from Beta Pictoris b as auroral radio emission. Such emission is not possible without a magnetic field or an atmosphere.Auroral Emission And Magnetic Field ScienceThe signals are not evidence of alien life. While humans constantly broadcast radio waves through television signals and radio towers, the universe also produces natural radio waves.Initially, astronomers questioned whether the detected radio signals came from the planet or from its host star, Beta Pictoris. Using radio images and reference frames, researchers concluded the waves originated from Beta Pictoris b.The electromagnetic waves resulted from magnetosphere-ionosphere coupling, a process that can produce visual effects such as the aurora borealis. Researchers say Beta Pictoris b is the first case in which astronomers detected radio emissions from an exoplanet and used them to measure its magnetic field.Implications For Habitability ResearchBeta Pictoris b is far from the first source of extraplanetary radio signals. Jupiter emits similar radio signals, and last year the MeerKAT array recorded emissions produced by hydroxyl radicals absorbing ambient radio waves.The implications of the Beta Pictoris b signals differ greatly. The presence of a magnetosphere could indicate potential habitability, though Beta Pictoris b is out of the running because it is a gas giant.Astronomers now have a better grasp of how to locate exoplanets with magnetospheres that could support life, raising the possibility of finding a potentially habitable planet closer than HD 20794 d.