"Radio signals suggest magnetic fields on Earth-like exoplanets"

Strange radio signals detected from YZ Ceti b, a rocky exoplanet orbiting a star 12 light-years away from Earth, could be due to a magnetic field. This is the first possible detection of a magnetic field on a planet beyond our solar system. Magnetic fields are important for making a planet habitable as they protect it from energetic particles from a star that can erode a planet's atmosphere. Further observations are needed to confirm if the radio waves are caused by the planet's magnetic field or a feature of the star itself.