Related by context. Frequent words. (Click for all words.) 69 Einstein theory 66 general relativity 64 quantum theory 63 quantum mechanics 62 cosmological 61 cosmology 60 relativity 59 quantum physics 58 astronomical observations 57 physicists 57 cosmologists 56 physics 56 gravitational wave 55 particle physics 54 Einstein 54 spacetime 54 theorems 54 Big Bang theory 53 relativistic 53 astrophysicists 53 astrophysical 53 Richard Feynman 53 theoretical physicist 53 cosmologist 53 Newtonian 52 Johannes Kepler 52 plate tectonics 52 theoretical physicists 52 thermodynamics 52 physicist 51 electromagnetism 51 Feynman 51 gravitational lensing 51 dynamical 51 theorem 50 cosmic 50 Physicist 50 quantum mechanical 50 multiverse 50 theory 50 theoretical 50 theorists 50 Theorists 49 theories 49 cosmic ray 49 subatomic 49 singularity 49 astrophysics 49 magnetar 49 gravitation 49 symmetries 49 String Theory 49 cosmos 48 Cassini Huygens 48 evolutionary theory 48 WMAP 48 atomic nuclei 48 thermodynamic 48 COROT 48 chirality 48 astronomers 48 gravitational waves 48 mathematical 48 theoretical calculations 48 empirical 48 pulsars 48 substorms 48 mathematician 48 astrophysicist 48 planetary 48 GRBs 48 celestial bodies 48 hypotheses 47 Leibniz 47 astronomy 47 epistemological 47 cosmological constant 47 evolutionist 47 Darwinian evolution 47 phenomenology 47 Professor Hawking 47 Saturn rings 47 universe 47 metaphysics 47 Higgs boson 47 Physicists 47 Heisenberg 47 anthropogenic climate 47 macroscopic 47 ontological 47 empiricism 47 scientific discoveries 47 theoretic 47 Mathematician 47 subatomic particles 46 transmutation 46 cosmic rays 46 phenomena 46 evolutionists 46 hypothesis 46 astronomer