Sunspot AR3842 erupted with an X9-class solar flare on Oct. 1, 2024. It was the biggest flare since the X8.2 flare of September 2017. NASA's Solar Dynamics Observatory captured the fireworks. Footage courtesy: NASA / SDO and the AIA, EVE, and HMI science teams, helioviewer.org | edited by Space.com's [Steve Spaleta](https://x.com/stevespaleta) Music: Ethereal Allure by Amber Glow / courtesy of http://www.epidemicsound.com