There is now tantalizing new evidence from Hubble Space Telescope data that a magnetosphere exists around WASP-12b. Observations of the planet taken in ultraviolet wavelengths by a team, including scientists from the Open University, reveal that the start of the dip in the light from the star during the transit of the planet is earlier in ultraviolet than visible light. Originally, material flowing from the planet onto the star was thought to have caused it. A University of St. Andrews, Scotland, group have, however, determined that the planet plows into a supersonic headwind and pushes a shock ahead of it — just like the one around a supersonic jet aircraft.