SpaceX CRS-35 Launch Creates a Spectacular “Space Jellyfish” Over Florida
The SpaceX CRS-35 launch delivered more than a routine trip to orbit. When a Falcon 9 rocket rose from Florida’s Space Coast before sunrise on October 13, 2026, it carried a Dragon cargo spacecraft packed with supplies, hardware and scientific investigations for the International Space Station (ISS). It also produced an extraordinary glowing plume across the dark sky—a phenomenon widely known as a space jellyfish.
The striking display appeared as the rocket climbed into sunlight while observers on the ground remained in predawn darkness. Its expanding exhaust formed a bright, bulb-shaped cloud with long, delicate trails that looked like the bell and tentacles of a jellyfish. For residents, photographers and spaceflight fans, the spectacle transformed an important logistics mission into one of the most memorable launches of the year.
SpaceX CRS-35 Launch: Key Mission Details
SpaceX launched CRS-35 at 6:33 a.m. Eastern Time from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. The flight was SpaceX’s 35th commercial resupply mission for NASA, continuing a partnership that uses private spacecraft to transport research, equipment and everyday necessities to the orbiting laboratory.
A reusable Falcon 9 rocket sent Dragon toward low Earth orbit. After stage separation, the first-stage booster returned to Landing Zone 40 at Cape Canaveral, while the second stage continued carrying Dragon toward its initial orbit. The spacecraft then began a sequence of phasing burns designed to gradually bring it closer to the ISS for autonomous docking.
What Did Dragon Carry to the International Space Station?
The Cargo Dragon carried more than 6,300 pounds (about 2,860 kilograms) of payload. The manifest included crew supplies, station hardware, computer resources, spacewalk equipment and hundreds of kilograms of scientific investigations. One of the most important hardware deliveries was the final set of ISS Roll-Out Solar Arrays, part of the long-running effort to increase the station’s available electrical power.
CRS-35 also supported research with potential benefits far beyond orbit. LambdaVision-1 is testing whether artificial retinal tissue can be manufactured more evenly in microgravity, where gravity-driven settling is greatly reduced. Researchers hope that improved layer-by-layer production could eventually contribute to better implants for people with retinal diseases.
Another study, Stellar Spheroids, is examining three-dimensional human heart-tissue models. Scientists will investigate whether microgravity helps these models develop more complex vascular networks, potentially improving the way cardiovascular disease and drug effects are studied. The mission also carried unconventional glass research, biological investigations and student-led projects, highlighting the ISS as both a national laboratory and an international platform for discovery.
What Is a Space Jellyfish?
A space jellyfish is not an object or living creature. It is a visual effect created when a rocket’s high-altitude exhaust plume is illuminated by sunlight while the sky below remains dark. The combination is most likely shortly before sunrise or just after sunset, when Earth’s curvature places ground-based observers in shadow but leaves the upper atmosphere exposed to direct sunlight.
As Falcon 9 climbed, its exhaust expanded rapidly in the thin air. Water vapour, carbon dioxide and other exhaust products spread into a broad cloud, and tiny particles and ice crystals scattered the sunlight. The result was a luminous shape with a bright “head” and trailing wisps. Changes in engine activity, stage separation and the booster’s manoeuvres could add curved streaks, ripples and branching trails to the display.
The effect can look mysterious because the plume grows far larger than the rocket itself. In the near-vacuum at high altitude, exhaust is no longer tightly compressed by dense surrounding air. It fans outward, catches sunlight and may glow in white, blue, pink or orange tones. The appearance is dramatic, but it is a normal consequence of rocket propulsion, atmospheric conditions and geometry—not evidence of an explosion or unidentified spacecraft.
Why the CRS-35 Space Jellyfish Was So Visible
Timing made the CRS-35 launch especially favourable for the jellyfish effect. Liftoff occurred shortly before sunrise, allowing the rocket to emerge from Earth’s shadow into sunlight within minutes. Clear viewing conditions and the broad, reflective plume made the display visible across parts of Florida and beyond. The returning booster also created additional illuminated patterns as it changed direction and prepared to land.
For the best chance of seeing a future rocket jellyfish, viewers should look for launches scheduled roughly 30 to 60 minutes before sunrise or after sunset. A clear horizon, low cloud cover and a flight path visible from the observer’s location all improve the odds. However, the effect is never guaranteed because plume behaviour, weather and the exact Sun–rocket–observer geometry all matter.
Why SpaceX CRS-35 Matters
Behind the viral images, CRS-35 demonstrated why regular cargo flights are essential to the ISS. The station depends on reliable deliveries for crew health, maintenance and continuous research. Dragon’s ability to carry pressurised and unpressurised cargo, dock autonomously and later return experiment samples to Earth makes it particularly valuable to scientists.
The launch also showed how reusability has changed orbital logistics. A flight-proven Falcon 9 booster and a Dragon spacecraft returning for another mission reduced the need to build entirely new vehicles for each cargo run. That approach supports a higher launch cadence while generating operational experience that can inform future commercial stations and long-duration missions.
CRS-35 therefore connected three stories at once: routine access to the ISS, innovative science in microgravity and a spectacular atmospheric display. The glowing space jellyfish captured public attention, but the mission’s lasting value lies in the research, power upgrades and supplies delivered to the people working above Earth.
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