Related by context. Frequent words. (Click for all words.) 52 gravitational 44 dynamical 43 astrophysical 43 angular momentum 42 magnetic 41 interstellar dust 40 gravitational pull 40 phenomena 40 celestial bodies 39 gravitation 39 interstellar medium 39 atmospheric 39 nebulae 38 cosmos 38 magnetosphere 38 cosmic 37 spacetime 37 centrifugal force 37 ionosphere 37 oscillations 37 cometary 36 outer planets 36 gravitational waves 36 perturbations 36 regolith 36 magnetic fields 35 planetary 35 orbits 35 planets 35 interstellar 35 geomagnetic 35 vortices 35 mid latitudes 34 cosmic dust 34 outer reaches 34 neutron star 34 torques 34 vortex 34 crustal 34 electromagnetism 34 orbiting spacecraft 34 magnetization 34 distant galaxies 33 orbiting 33 comets 33 magnetism 33 ringed planet 33 velocities 33 outer space 33 trajectories 33 elliptical galaxies 33 electromagnetic 33 cosmic ray 33 terrestrial planets 33 galaxy clusters 33 cosmological 32 Saturn moons 32 hydrogen atoms 32 supernova explosion 32 spectroscopic 32 atomic nuclei 32 globular clusters 32 gravity 32 quasars 32 inertial 32 magnetized 32 subatomic 32 heliosphere 32 stratosphere 32 spacecrafts 32 Coriolis 32 galaxy cluster 32 entropy 32 solar flares 32 convective 31 orbital 31 supernovas 31 vibrational 31 neutron stars 31 planet orbiting 31 pulsars 31 universe 31 galaxy 31 tectonic 31 pulsar 31 Jupiter Saturn Uranus 31 subatomic particles 31 nuclei 31 superposition 31 quasar 31 atoms 31 otherworldly 31 galactic 31 lunar surface 30 symmetries 30 Orbiting 30 polar regions 30 galaxies 30 atmospheric circulation 30 precession 30 electro magnetic