Magnetized plasmas 12 Magnetoplasma 12 Magnetohydrodynamics 10 Expansion rate 8 Flux ropes 8 Interplanetary medium 8 Magnetic clouds 8 Magnetic fields 8 Magnetohydrodynamics (MHD) 8 Solar system 8 Solar wind 8 Sun: coronal mass ejections (CMEs) 8 Velocity profiles 8 Mean magnetic field 6 Aspect ratio 4 Astronomical units 4 Clouds 4 Computer simulation 4 Coronal mass ejection 4 Cross section 4 Dynamical evolution 4 Expansion 4 Expansion properties 4 Global quantities 4 Helicities 4 Heliospheres 4 In-situ 4 In-situ observations 4 Interplanetary coronal mass ejections 4 Interplanetary spacecraft 4