CME impact above Ondrejov

On October 3rd, a CME (Coronal Mass Ejection) was hurled toward Earth by a powerful X9.1-class solar flare. It struck our magnetosphere a few days later, adorning the sky with colorful swirls. On October 7th, Vlastimil Vojáček captured the aurora borealis, creating a special atmosphere at the Ondřejov observatory.