Hi The higher rotation of outer layers of planets continues to occupy me. They are very common on Earth, Venus, Saturn and Jupiter. Even the Sun has it an even other stars. I have begun to think of an explanation where pressure and viscosity changes due to rotational speed in the upper atmospheres or upper fluid layers.
The basics is that fluid flowing along the rotation is less affected by gravity since they have a centrifugal force associated with them. This is also valid for the molecular motion. Any gas on a planet or any liquid on a star has molecular motion in making centrifugal effects different on the molecular level. Fluid flowing faster than the solid body rotation speed cause less pressure on lower gas and hence lower viscosity making motion for the fluid along the solid body rotation direction easier than flow against it. That could be the reason behind all these apparently strange higher rotation speeds found practically everywhere where. It could be present even on galaxies since they use the concept of viscosity even there. The effect could thus maybe lower the need for dark matter. Can someone help me to determine the effect and find out if it is significant on any know astronomical body? David David Jonsson, Sweden, phone callto:+46703000370
