Related by context. Frequent words. (Click for all words.) 45 theoretical physicist 42 cosmology 40 astrophysicist 40 theoretical physics 39 physicist 38 Physicist 38 quantum theory 38 Einstein theory 38 Carl Sagan 38 Hawking 37 astronomer 36 quantum physics 36 Einstein 35 quantum mechanics 35 particle physics 34 physicists 33 Albert Einstein 33 astrophysics 33 parallel universes 32 physics 32 mathematician 31 Nobel laureate 31 Cosmology 31 astrophysicists 31 Kurzweil 31 general relativity 30 teleportation 30 Squyres 30 UFOs 30 Stephen Hawking 30 cosmos 29 Berners Lee 29 quantum computing 28 Diamandis 28 Bezos 28 astronomy 28 extraterrestrials 28 outer space 27 Ishiguro 27 Isaac Asimov 27 Shostak 27 boffin 27 wormhole 26 Cerf 25 mathematicians 25 universe 25 Daleks 25 spaceship 25 Pratchett 25 Nasa 24 Singularity 24 Gaskell 24 Charles Darwin 24 Michael Crichton 24 evolutionists 24 Richard Garriott 23 science fiction 23 Richard Dawkins 23 Darwin theory 22 Yudof 22 spacecraft 22 zero gravity 22 Asimov 22 scientific breakthroughs 22 Universe 21 artificial intelligence 21 jetpack 21 Gene Roddenberry 20 weightlessness 20 Mankiw 20 Higgs 19 TARDIS 19 Pinker 19 evolutionary theory 19 Cleese 19 Crichton 18 Dawkins 18 Creationism 18 Lévy 18 Terry Pratchett 17 Trebek 17 Archbishop Tutu 17 Behe 17 Brief History 17 Qaradawi 17 Crick 17 Gaiman 17 Nimoy 17 singularity 17 X Prize 16 creationists 16 Tardis 16 Rowling 14 Judt 14 Navarro Valls 12 Da Vinci 12 Ian McKellen 12 Rutan 11 Melvill 10 motor neurone disease 8 Hitchens