What is the 'space jellyfish' cloud seen after SpaceX launch?

A ‘space jellyfish’ cloud was seen in the sky after SpaceX’s Falcon 9 rocket, carrying a Dragon spacecraft, lifted off from Cape Canaveral Space Force Station in Central Florida, US, on Tuesday. The phenomenon occurs near sunrise or sunset when sunlight illuminates the rocket’s exhaust plume, creating a glowing shape resembling a jellyfish, according to NASA’s Kennedy Space Center.