Related by context. Frequent words. (Click for all words.) 63 neutrino 63 diffraction pattern 60 substorm 60 excitons 60 muon 59 photonic crystal 59 subatomic particle 58 gravitational wave 58 Galileo spacecraft 58 exciton 58 positron 58 spacetime 58 magnetic reconnection 58 Hawking radiation 57 spectroscopic 57 WIMPs 57 planetary nebulae 57 radial velocity 57 photoluminescence 57 nuclei 57 elemental composition 57 interferometers 57 interferometry 57 quantized 57 magnetar 57 X ray emission 56 quark gluon plasma 56 novae 56 electron spins 56 spatial dimensions 56 anisotropy 56 boson 56 ultraviolet wavelengths 56 GRB # 56 XMM Newton 56 optical wavelengths 56 particle detectors 56 planet Uranus 56 GRBs 56 extrasolar planet 56 interferometric 56 entangled photons 56 neutrinos 56 active galactic nuclei 56 dynamical 56 plasmons 56 moonlets 56 positrons 55 Type Ia supernovae 55 colliders 55 photons 55 muons 55 interplanetary spacecraft 55 Higgs particle 55 galaxy NGC 55 VIRTIS 55 gravitational waves 55 antihydrogen 55 microscopy techniques 55 Voyager spacecraft 55 Mass spectrometry 55 isotropic 55 optical lattice 55 photometer 55 WASP #b 55 Earth magnetosphere 55 baryons 55 gravitational lensing 55 dwarf galaxy 55 decoherence 55 comet tail 54 photon 54 gamma ray burst 54 biological molecules 54 quantum entanglement 54 frequency comb 54 confocal microscopy 54 microlensing 54 submicroscopic 54 accretion disk 54 supersymmetry 54 magnetars 54 neutron stars 54 COROT 54 Hubble observations 54 atomic nuclei 54 supernovae 54 Earthlike 54 fluorescent molecules 54 optical biosensors 54 antiprotons 54 Galaxy Evolution 54 attosecond 54 elliptical galaxies 54 electron density 54 superfluid 54 solar corona 54 galaxy formation 54 nanosized 54 cometary 54 Cepheids