Related by context. Frequent words. (Click for all words.) 70 ejecta 68 protoplanetary disk 67 accretion disk 67 interstellar medium 67 supernova explosion 66 solar corona 66 planetary nebulae 66 ionized gas 66 X ray emission 66 planetesimals 65 moonlets 64 supernova remnants 64 solar nebula 64 supernova explosions 63 planetary nebula 63 nanosized 63 electron density 62 magnetar 62 active galactic nuclei 62 torus 62 galaxy formation 62 cometary 61 accreting 61 terrestrial planets 61 silicates 61 neutron stars 61 nuclei 61 galaxy cluster 61 magnetars 61 ionised 61 polar vortex 61 morphologies 61 comet nucleus 61 supernova remnant 61 magnetosphere 61 comet tail 61 visible wavelengths 60 elemental composition 60 galaxy clusters 60 Gamma rays 60 radiative 60 aerosol particles 60 elliptical galaxies 60 Earthlike 60 anisotropy 60 spherules 60 dwarf galaxy 60 neutron star 60 superfluid 60 Oort Cloud 60 Cepheids 59 spherical 59 dwarf galaxies 59 dynamical 59 Andromeda galaxy 59 interstellar dust 59 olivine 59 gravitationally 59 meteoroids 59 WASP #b 59 galaxies 59 optical wavelengths 59 silicon atoms 59 electrically conducting 59 spacetime 59 magmatic 58 Earth magnetosphere 58 anisotropic 58 Kuiper belt 58 lunar soil 58 convective 58 globular clusters 58 photonic crystal 58 astrophysical 58 Fig. 1A 58 magnetic flux 58 planet orbits 58 orbitals 58 Type Ia supernovae 58 gaseous 58 colliding galaxies 58 GPa 58 aurorae 58 observable universe 58 supermassive black hole 57 Supernovae 57 nebulae 57 auroral 57 quasar 57 fluorescing 57 outer layers 57 regolith 57 spectrographs 57 crystal lattice 57 nanoscopic 57 nebula 57 rocky planets 57 lithosphere 57 meteoroid 57 planets 57 nucleation