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(Click for frequent words.) 75 atomic nuclei 73 atoms 69 hydrogen atoms 67 nuclei 67 alpha particles 66 neutron 66 protons 66 photons 66 electrons 65 muons 65 helium atoms 65 positrons 64 ions 64 hydrogen nuclei 64 antihydrogen 64 antiprotons 64 atomic particles 63 neutrinos 63 electron beams 63 hydrogen atom 62 sodium atoms 62 gamma rays 62 proton 62 helium nuclei 62 electron 62 subatomic particles 61 photon 61 gamma rays emitted 61 antineutrinos 61 radioactive decay 61 deuterium 61 rubidium atoms 61 magnetic fields 61 electron neutrinos 61 californium 61 antiparticle 61 antiparticles 60 muon 60 electrons protons 60 absorb neutrons 60 fission 60 Gamma rays 60 magnetization 60 cosmic rays 60 GeV 60 particles 60 X ray pulses 60 neutrino 60 neutron star 60 deuterium atoms 60 hydrogen ions 60 fermions 59 alpha particle 59 nucleon 59 antihydrogen atoms 59 neutralinos 59 spherical particles 59 antimatter particles 59 atomic nucleus 59 hadrons 59 antiproton 59 Rydberg atom 58 antiquarks 58 excitons 58 helium ions 58 particle beams 58 Muons 58 quantum mechanically 58 quasiparticles 58 exciton 58 solar neutrinos 58 quark gluon plasma 58 bosons 58 neutron stars 58 fission reactions 58 silicon monoxide 58 supernova explosions 58 mesons 58 cosmic ray 58 positron 58 qubit 58 magnesium ions 57 polaritons 57 rubidium vapor 57 galactic cosmic rays 57 dye molecules 57 laser pulse 57 Higgs bosons 57 nucleons 57 ionized gas 57 W boson 57 laser pulses 57 nanoclusters 57 Photons 57 nanobubbles 57 electron volts 57 interstellar clouds 57 atom 57 surface plasmons 57 magnetar 57 quarks 57 muon neutrinos 57 strange quarks 57 kaons 57 energetic electrons 57 photon energies 57 galactic disk 57 axions 57 orbitals 57 Bose Einstein condensate 57 magnetosphere 57 wavefunction 57 cosmic ray particles 57 tau neutrinos 57 ionize 57 oxygen atoms 56 solar nebula 56 phonons 56 baryon 56 millisecond pulsars 56 excitations 56 magnetic flux 56 ultracold atoms 56 galaxy clusters 56 cesium atoms 56 spontaneous fission 56 ultracold 56 chondrules 56 ion beams 56 electron spins 56 helium atom 56 X ray photons 56 Neutrinos 56 meson 56 particle 56 electrons orbiting 56 supermassive black holes 56 bosonic 56 WIMPs 56 Gravitational waves 56 supermassive black hole 56 gravitational radiation 56 electron spin 56 pions 56 femtoseconds 56 impactors 56 Neutrons 56 colliding protons 56 phonon 56 antineutrino 56 X ray emission 56 vibrational 56 baryons 56 X ray binaries 56 molecules 56 Bose Einstein condensates 56 Saturn magnetosphere 56 picosecond 55 solitons 55 strange quark 55 planetesimals 55 MeV 55 subatomic 55 superfluid 55 millisecond pulsar 55 antihelium 4 55 keV 55 ferromagnetic 55 angular momentum 55 hydrides 55 dipole moment 55 Bose Einstein Condensate 55 supernovae 55 gravitationally 55 fissioning 55 Hawking radiation 55 chemically reactive 55 interstellar medium 55 noble gases 55 osmium 55 valence electrons 55 gravitons 55 hydroxyl radicals 55 brown dwarfs 55 plasmons 55 Neutron stars 55 energetic gamma rays 55 diffraction pattern 55 chromophores 55 neutron beams 55 B mesons 55 fermion 55 nanocrystals 55 lithium atoms 55 electron pairs 54 runaway thermonuclear 54 Cherenkov radiation 54 ionized particles 54 superheavy element 54 galaxies 54 relativistic particles 54 scintillator 54 gravitational waves 54 SUSY 54 quantum particle 54 photon beam 54 metastable 54 Rydberg atoms 54 AGNs 54 nanomagnets 54 electron volt 54 hydrogens 54 strangelet 54 zinc ions 54 magnetic monopoles 54 cosmic ray collisions 54 nanodot 54 B meson 54 quantum mechanical 54 antiferromagnets 54 calcium ions 54 GRBs 54 oxygen atom 54 electrons positrons 54 neutralino 54 decoherence 54 Alfvén waves 54 emit X rays 54 ion collisions 54 Cosmic rays 54 emits gamma rays 54 starburst galaxies 54 fissionable 54 neutron radiation 54 spherically symmetric 54 berkelium 54 photons emitted 54 boson 54 protoplanetary disk 54 ionised 54 paramagnetic 54 particle acceleration 54 RHIC 54 organic molecules 54 active galactic nuclei 53 catalytically active 53 globular clusters 53 electron positron pairs 53 polariton 53 outer layers 53 shorter wavelengths 53 electric dipole 53 carbonate minerals 53 nitrogen atoms 53 neutron beam 53 radiative 53 gravitational attraction 53 blazars 53 dimer 53 gluons 53 boron atoms 53 weakly interacting 53 meteoroids 53 entangled photons 53 hadron 53 supersolid 53 comets 53 protons electrons 53 protostar 53 infrared radiation 53 ionise 53 quanta 53 plasmon 53 antihelium 53 W bosons 53 terahertz radiation 53 Fermions 53 covalent bonds 53 circumstellar 53 electrons emitted 53 emit photon 53 reactant 53 crystallites 53 ejecta 53 supersymmetric particles 53 antimatter atoms 53 bilayer 53 spacetime 53 nanometer sized 53 potassium atoms 53 wavelengths 53 UV photons 53 molecule 53 optical lattice 53 supernova explosion 53 massless particles 53 Earth magnetosphere 53 rubidium atom 53 cobalt atom 53 oxygen ions 53 elongated orbits 53 electron scattering 53 photochemical reactions 53 superposition 53 quantum bits 53 relativistic protons 52 rubidium 52 hydrogen helium 52 dwarf galaxies 52 leptons 52 proton proton 52 unpaired electrons 52 ionizing 52 proton proton collisions 52 diffract 52 deuterium nuclei 52 THz radiation 52 γ 52 magnetic excitations 52 silicate dust 52 superatoms 52 olivine 52 gamma ray emission 52 van der Waals 52 blazar 52 superheavy elements 52 femtosecond laser pulse 52 lepton 52 attosecond 52 subatomic particle 52 icy moons 52 cometary material 52 quark 52 controllably 52 superpositions 52 dimers 52 phosphorus atoms 52 nebular 52 evanescent waves 52 gamma ray bursts 52 positronium atoms 52 hydroxyl molecules 52 emit gamma rays 52 visible wavelengths 52 inhomogeneous 52 dopants 52 sterile neutrinos 52 VHE gamma rays 52 globular cluster 52 trimers 52 elliptical galaxies 52 brown dwarf 52 lanthanides 52 x ray beams 52 ferromagnetic materials 52 protons collide 52 alkali atoms 52 Type Ia supernova 52 distant supernovae 52 excitation 52 silicon atoms 52 infrared photons 52 surface plasmon 52 qubits 52 Bose Einstein condensate BEC 52 muon neutrino 52 WASP #b 52 exoplanets 52 photochemistry 52 accretion disks 52 hafnium 52 magnetars 52 micelles 52 sulfur atoms 52 cesium ions 52 magnetic dipole 52 ion beam 52 nucleosynthesis 52 silicate minerals 52 attoseconds 52 dwarf galaxy 52 samarium 52 biomolecule 52 entangled qubits 52 pulsar 51 type Ia supernova 51 antimatter 51 curies 51 reactants 51 Raman scattering 51 quasicrystal 51 Alfven waves 51 electron neutrino 51 dopant 51 zeolites 51 chemical reactions 51 resonant frequency 51 quantum superposition 51 SN #A 51 hydrocarbon molecules 51 X ray wavelengths 51 AB Aurigae 51 nanocrystal 51 infalling 51 silicates 51 Eta Carinae 51 terahertz waves 51 HFIR 51 ultraviolet wavelengths 51 filaments 51 merging galaxies 51 branes 51 dipolar 51 manganese atoms 51 nanomotors 51 electron affinities 51 nanoantennas 51 millimeter wavelength 51 hyperpolarized xenon 51 quantum correlations 51 magnetic vortices 51 isotopes 51 conventional superconductors 51 spectroscopic analysis 51 europium 51 electron proton 51 optical lattices 51 nanotubes 51 spin excitations 51 baryonic 51 gamma ray photons 51 circularly polarized light 51 nuclear fission 51 hydroxide ions 51 ultrasonic vibrations 51 blue supergiant 51 tholins 51 CMB photons 51 toroid 51 hyperfine 51 unpaired electron 51 electronvolts 51 diffraction patterns 51 asteroids 51 SN #gy 51 quasiparticle 51 nuclides 51 gravitational 51 emit photons 51 accretion disk 51 tokamaks 51 fermionic 51 ULIRGs 51 adenine 51 superdense 51 chirality 51 chlorophylls 51 ionized 51 planets 51 pulsars 51 supersymmetric 51 picoseconds 51 emits photons 51 ceria 51 fissile isotope 51 cementite 51 Wolf Rayet star 51 atom smashers 51 X ray binary 51 amino acids 51 primitive meteorites 51 proton collisions 51 HD#b 51 anions 51 supermassive 51 crystal lattice 51 absorption spectroscopy 51 neodymium Nd 51 GPa 51 water vapor 51 hydrogen isotopes deuterium 51 detect gamma rays 51 photosystem 51 particle colliders 51 quantum dots 51 CAIs 51 distant galaxies 51 nanocages 51 metalloproteins 50 chlorine atom 50 hexamers 50 adsorption 50 beryllium ion 50 strangelets 50 cosmic particles 50 metallicity 50 martensite 50 photoionization 50 polymer beads 50 thermonuclear fusion 50 electron density 50 ferromagnet 50 photons particles 50 particles WIMPs 50 uranium deuteride 50 tokamak 50 gravitationally bound 50 lipid membranes 50 sunlike stars 50 fluorescent molecules 50 soliton 50 beryllium ions 50 adsorbed 50 carbonate globules 50 molten iron 50 sterile neutrino 50 particle detectors 50 ionizes 50 gold nanoclusters 50 supernova 50 proton beams 50 undiscovered particle 50 polystyrene spheres 50 porphyrins 50 vibrational modes 50 comet nucleus 50 solar corona 50 microcavity 50 dipoles 50 carbene 50 photosphere 50 conduction electrons 50 geoneutrinos 50 photonic crystal 50 superfluids 50 gravitational wave 50 supercurrent 50 Bose Einstein condensation 50 diamagnetic 50 polarized electrons 50 nanodroplets 50 X ray beams 50 pnictides 50 SWCNT 50 globulars 50 americium 50 hemoglobin molecules 50 sonoluminescence 50 spherical nanoparticles 50 cesium atom 50 Higgs particle 50 nanogels 50 chiral molecules 50 plagioclase 50 ion traps 50 actinide 50 vortices 50 galaxies collide 50 electronic excitations 50 isotope ratios 50 protoplanets 50 gamma ray burst 50 planets orbits 50 Gal Yam 50 chemical reactants 50 quantum oscillations 50 Antennae Galaxies 50 strontium titanate 50 bilayer graphene 50 krypton 50 binds particles 50 HD #b [002] 50 supernova remnants 50 positronium 50 angstroms 50 nanodots 50 fluorophores 50 photocurrent 50 spatially resolved 50 isotope 50 galaxy cluster 50 magnetic anisotropy 50 luminous galaxies 50 magnetic reconnection 50 isotropic 50 pion 50 rocky planets 50 nanohorns 50 baryonic matter 50 gluon 50 xenon 50 Casimir cavity 50 isotopic ratios 50 piconewtons 50 quadrillionths 50 semiconductor nanocrystals 50 ultracold molecules 50 yttrium barium copper 50 superconducting 50 quantum tunneling 50 deuterium tritium 50 quasicrystals 50 messenger RNA molecules 50 attosecond pulses 49 ultraviolet photons 49 substorms 49 backscattered 49 gaseous 49 coronal mass ejections 49 Arches Cluster 49 femtosecond timescale 49 tetrahedral 49 Super Kamiokande 49 oppositely directed 49 nanometer scale 49 cosmic ray protons 49 photon fluorescence 49 interstellar dust grains 49 Type Ia supernovae 49 spectra 49 quasar 49 laser irradiation 49 nitride layer 49 diatomic 49 antibody antigen 49 ionization 49 intermetallic 49 graphene layers 49 metal ions 49 biological molecules 49 nanosized 49 BECs 49 stoichiometry 49 SMBHs 49 hydrogen deuterium 49 neutrons emitted 49 quantum dot 49 iron oxide nanoparticles 49 astrophysical 49 micrometer sized particles 49 hydrogen isotopes 49 highly collimated 49 crystals 49 hyperpolarization 49 Z bosons 49 photocatalysts 49 X rays gamma rays 49 crystalline structure 49 SWNTs 49 comet 49 ARPES 49 helical structures 49 fission fusion 49 gravitational interactions 49 interparticle 49 vesicle fusion 49 planetary nebulae 49 magnetisation 49 Oort Cloud 49 femtosecond pulses 49 nano particles 49 quantum coherence 49 nonmagnetic 49 fission reactor 49 accreting 49 Magnetars 49 quasars 49 krypton gas 49 monolayers 49 Hot Jupiters 49 electron positron 49 QDs 49 -# degrees Fahrenheit [002] 49 particle accelerators 49 particle collisions 49 asparagine 49 kelvin 49 radionuclide 49 Electrons 49 spherules 49 Supernovae 49 graviton 49 microquasar 49 Quarks 49 -# ° C [001] 49 proton neutron 49 enthalpy 49 axion 49 nanoparticles 49 luminosity 49 carbon atoms 49 planet magnetosphere 49 colloidal crystals 49 Cassini ion 49 magnetic nanoparticles 49 electromagnetic flux 49 high redshift galaxies 49 gamma ray flares 49 Higgs singlet 49 proton particles 49 earths 49 impactor spacecraft 49 catalytic reactions 49 relativistic 49 parahydrogen 49 stimulated emission 49 antiferromagnetic 49 Z boson 49 microwave radiation 49 nebulae 49 thermonuclear explosion 49 silicate rocks 49 icosahedral 49 excitation energies 49 femtosecond 49 electrons behave 49 nanorod 49 microstructures 49 nanorings 49 extrasolar 49 aerosol particles 49 intramolecular 49 ultracold polar molecules 49 singlet oxygen 49 Cepheids 49 rotating neutron stars 49 Bosons 49 fermionic atoms 49 sodium ions 49 Milky Way galaxy 49 radiofrequency waves 49 hot Jupiters 49 silicate 49 CdSe 49 ultraviolet light 49 colloidal particles 49 neutron flux 49 calorimeter 49 photolysis 49 GAPDH 49 gold nanoshells 49 Enceladus 49 mesoporous 49 oscillations 49 -# degrees Celsius [001] 49 magma ocean 49 radioactive nuclides 49 gamma ray 49 multiphoton 49 ionised gas 49 photon beams 49 gamma radiation 49 ytterbium 49 spicules 49 superconductivity 49 organometallic compounds 49 synchrotron x ray 49 cadmium selenide 49 nanospheres 49 graphene membrane 49 velocities 49 gravitational lensing 49 J# +# [002] 49 magnetic monopole 49 nacre 49 Mott insulator 49 elemental abundances 49 biomolecules 49 emits X rays 49 electron ion 49 magnetic particles 49 hydride 49 substorm 49 Governmentium 49 uncharged particles 49 absorption spectra 49 nanotube 49 relativistic electrons 49 proton antiproton collisions 49 starquakes 48 nebula 48 FRET 48 ionisation 48 waveguides 48 dimensional electron 48 magnetic dipoles 48 isomers 48 Fomalhaut b 48 strontium atoms 48 phytochrome 48 meteoritic material 48 chlorophyll molecules 48 antiparallel 48 magnons 48 stellar nurseries 48 sulfate aerosol 48 chlorine monoxide 48 redshifts 48 protoplanetary disks 48 supermassive stars 48 microwave photons 48 quantum entanglement 48 asteroidal 48 dihydrogen 48 HM Cancri 48 RRATs 48 cerium 48 microbubbles 48 crystalline silicates 48 radiative recombination 48 optical wavelengths 48 NADH 48 torus 48 adsorbate 48 Beta Pictoris b 48 unpolarized 48 cometary dust 48 gravitational acceleration 48 neutral mass spectrometer 48 terrestrial planets 48 micrometer scale 48 xenon ions 48 Optical tweezers 48 electron pairing 48 pyroxene 48 planetary nebula 48 GJ #b [002] 48 nucleobases 48 palladium nanoparticles 48 nonlinear optical 48 topological insulators 48 electron volts eV 48 relativistic speeds 48 cosmologists 48 meV 48 infrared laser pulses 48 zinc selenide 48 gravitational pulls 48 spectroscopic techniques 48 polarimetry 48 comet dust 48 Type Ia 48 oxalate 48 titanium oxide 48 chemical reactivity 48 gold nanorods 48 van der Waals forces 48 ultrasonic waves 48 galactic cosmic ray 48 RS Ophiuchi 48 nonequilibrium 48 exoplanetary 48 nitrogen atom 48 Type 1a supernovae 48 Kanatzidis 48 decays 48 orbital angular momentum 48 optical resonator 48 gamma ray radiation 48 nanosheets 48 Corot 9b 48 icy comets 48 semiconducting material 48 diamond anvils 48 frequency electromagnetic waves 48 perovskite 48 nanowire 48 aldehydes 48 fluorescence quenching 48 ultracold temperatures 48 super Earths 48 kT 48 superconductive 48 absorbs neutrons 48 resonance frequency 48 trillionths 48 terawatt 48 silica nanoparticles 48 galactic halo 48 novae 48 supergiant star 48 microcavities 48 spiral galaxies 48 macromolecule 48 protons neutrons 48 nanoprobes 48 photonic bandgap 48 hypervelocity 48 NMR spectra 48 XTE J# 48 hydroxyl 48 oppositely charged 48 adatoms 48 synchrotron X ray 48 NIF lasers 48 x ray pulses 48 nanopillars 48 fluorescent probes 48 superluminal 48 Rayleigh scattering 48 fullerene 48 zirconium cladding 48 crystallinity 48 lithium hydride 48 transiting planets 48 cuprates 48 filamentary 48 meta atoms 48 CERN LHC 48 ionized gases 48 fluoresce 48 Ultraviolet light 48 X ray spectroscopy 48 GZK cutoff 48 desorbed 48 exoplanetary systems 48 photosynthetic apparatus 48 gravitational redshift 48 Einstein equations 48 momenta 48 nanosize 48 van der Waals interactions 48 ferromagnetism 48 teraelectronvolts TeV 48 spheroidal 48 resonant frequencies 48 VLTI 48 chondrites 48 ferromagnets 48 macromolecules 48 alkynes 48 femtosecond laser pulses 48 optical excitation 48 interstellar dust 48 fissions 48 spectral measurements 48 emitting radiation 48 micrometre sized 48 quantum phenomena 48 ionized molecules 48 porphyrin 48 piezoelectric crystals 48 photosystems 48 cosmic radiation 48 spectroscopic 48 nanoprobe 48 weak gravitational lensing 48 laser excitation 48 supercooled 48 PSR J# 48 earth crust 48 fluorescence spectra 48 ions electrically charged 48 LHC experiments 48 photobleaching 48 graphite whiskers 48 nonradioactive 48 electrostatic repulsion 48 Milky Way halo 48 GJ #b [001] 48 kcal mol 48 fluorine 48 superparamagnetic nanoparticles 48 ruthenium 48 rotaxanes 48 nanolaser 48 bolometers 48 graphene sheets 48 graphitic carbon 48 magnetospheric 48 nanomesh 48 fluorescence 48 diffraction grating 48 proplyds 48 ionizing radiation 48 carbides 48 cryostat 48 RNA molecules 48 xenon atom 48 carbonic acid 48 cryogenic temperatures 48 post perovskite 48 dynamical evolution 47 cosmic strings 47 Gamma ray bursts 47 photoemission 47 blue straggler 47 proton decay 47 photon absorption 47 observable universe 47 nanoscale 47 Epsilon Eridani 47 Oganessian 47 vibrationally excited 47 ozone O3 47 hydroxyl radical 47 diamond anvil 47 isomeric 47 actinides