X9! Sun unleashes biggest solar flare since 2017 - See a time-lapse

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, | edited by ’s [Steve Spaleta]() Music: Ethereal Allure by Amber Glow / courtesy of