In October 2021, the Sun unleashed an extremely powerful X-class solar flare so intense it was detected on multiple planets, including Earth, the Moon, and Mars, despite them being on opposite sides of the Sun. This unprecedented event highlights the immense power of solar activity and its ability to influence space environments across the solar system. The video showcases the astonishing scale of this solar flare, illustrating its rare reach and impact on our understanding of solar phenomena.