Jellyfish-like trail spotted in Russian sky after rocket launch

Russia's St Petersburg witnessed a jellyfish-like light trail in the sky following the launch of a Soyuz-2.1b rocket. This phenomenon occurs when a rocket is launched shortly before sunrise or after sunset, i.e., when the sun isn't illuminating the surface but its rays strike the gases released by the spacecraft at high altitude. Visuals showing the glowing trail surfaced online.