Solar Storm Breached Earth's Radiation Shield in May 2024

• A solar storm in May 2024 caused auroras as far south as Florida and Mexico.
• Japan's Arase space probe detected ultrarelativistic electrons inside Earth's radiation shield.
• Research by Nagoya University suggests these electrons were accelerated locally.
• The electrons were not infiltrating from outer radiation belts.
• Scientists are studying the impacts of this event on the local environment.