An international team of scientists has proposed using the Square Kilometer Array (SKA), a next-generation radio telescope, to study magnetic fields on exoplanets and ultracool dwarfs (UCDs). Their findings are detailed in a chapter published in Advancing Astrophysics with the SKA II, a 2026 science book supported by the Square Kilometer Array Observatory (SKAO). The chapter, also shared on the arXiv preprint server, outlines how the SKA could detect auroral radio signals from exoplanets, allowing scientists to study their magnetic fields, radiation belts, and possible moons. This research highlights the potential of the SKA to advance our understanding of planetary systems beyond our own solar system. UCDs, which are small, cool stars or brown dwarfs, are particularly interesting targets for this kind of study. Unlike the sun, UCDs emit radio waves, and astronomers have been observing them for decades. The SKA's advanced observational techniques, such as interferometry and astrometry, could help detect exoplanets that are only a few times more massive than Earth orbiting these cool stars. Interferometry combines signals from multiple telescopes to improve resolution, while astrometry measures the precise positions and movements of stars. These methods may enable scientists to identify planets that are otherwise difficult to detect. The researchers suggest that focusing on the most promising exoplanetary systems and known radio-emitting UCDs could be an effective strategy for discovery. New candidate systems identified by the SKA and other radio telescopes may also be suitable for follow-up observations. Detecting satellites, or moons, around these stars would require long-term monitoring using astrometry, as the gravitational influence of a moon would cause subtle changes in the star’s motion over time. Research into exoplanet magnetic fields is still in its early stages, but recent discoveries have sparked interest. In 2026, astronomers announced the detection of radio signals from Beta Pictoris b, an exoplanet with about 10 to 12 times the mass of Jupiter. This planet orbits its star every 23.7 years at a distance of about 10 astronomical units (AU). Scientists believe the signals may originate from the planet's aurorae, suggesting it has a strong magnetic field. A study published in Nature Astronomy in June 2026 also reported the detection of a magnetic field around a hot Jupiter, a type of gas giant that orbits very close to its star. These findings underscore the growing importance of radio astronomy in the study of exoplanets.