Related by context. Frequent words. (Click for all words.) 60 redshifts 60 electron density 59 ultraviolet wavelengths 59 solar nebula 59 isotope ratios 59 isotopic composition 58 substorm 58 baryons 58 morphologies 58 anisotropy 58 photochemistry 58 exciton 57 metallicity 57 WASP #b 57 TrES 57 γ 57 gravitational lens 57 ultracold 57 subatomic particle 57 oxygen isotope 57 decoherence 57 photoluminescence 57 goethite 56 icy moons 56 photosphere 56 galaxy formation 56 Higgs particle 56 exosphere 56 aerosol particles 56 excitations 56 mesosphere 56 protoplanetary disk 56 osmium 56 noctilucent clouds 55 diffraction pattern 55 high temperature superconductors 55 interferometers 55 helium atoms 55 electron spins 55 polar vortex 55 stellar nurseries 55 serum calcium 55 radial velocity 55 ellipsoid 55 X ray emission 55 atmospheric methane 55 spatial dimensions 55 Hawking radiation 55 Hubble observations 55 superlens 55 z = 55 spatial scales 55 shorter wavelengths 54 tropospheric 54 red supergiant 54 tetrahedral 54 conductance 54 Cepheids 54 superfluid 54 super Earths 54 plasmon 54 neutrino 54 Fig. 1A 54 impactors 54 infarcts 54 forcings 54 histone modifications 54 planet orbits 54 geoid 54 high temperature superconductivity 54 quantum entanglement 54 interferometric 54 Earth magnetosphere 54 cuprates 54 topological 54 insolation 54 visible wavelengths 54 macroscopic 54 Type Ia supernovae 54 placental mammals 53 abundances 53 interplanetary spacecraft 53 nanobacteria 53 bandgap 53 elemental composition 53 dynamical 53 lithosphere 53 spectroscopic 53 atomic nucleus 53 mesoscale 53 boson 53 Supplementary Fig 53 GeV 53 photometry 53 GRBs 53 planetesimals 53 methylation patterns 53 microstructural 53 supersymmetry 53 absorbance 53 microlensing