@techontells: 🌌 Rocket "Jellyfish" Phenomenon This video shows a spectacular visual effect known as the "space jellyfish" or "jellyfish effect," which is a display of rocket physics. This phenomenon occurs during a rocket launch, typically a few minutes after liftoff, when the vehicle is at a high altitude (usually above 100 kilometers). At this height, the exhaust plume expands dramatically because the pressure outside the rocket is nearly a vacuum. The bright core seen in the center is the engine firing, while the rapidly expanding, translucent cloud around it is the exhaust gases pushing out into the near-vacuum, creating the characteristic dome or bell shape that resembles a marine jellyfish. The effect is often illuminated by the sun, even if the ground below is in twilight or darkness.

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Sunday 08 February 2026 19:39:44 GMT