Related by context. Frequent words. (Click for all words.) 72 Roger Penrose 62 Paul Dirac 61 panspermia 61 Richard Feynman 59 James Lovelock 58 Francis Crick 58 boson 57 physicist Richard Feynman 56 Plimer 55 Tycho Brahe 55 Martian meteorites 55 Edwin Hubble 55 Astronomer Royal 55 Roger Highfield 55 Professor Hawking 55 Ludwig Wittgenstein 54 astronomer Edwin 54 Terry Eagleton 54 Professor Stephen Hawking 54 God Particle 54 sociobiology 53 Nicolaus Copernicus 53 particle physicists 53 double helix structure 53 Simon Baron Cohen 53 ALH# 53 Stephen Hawking 53 Astrophysicist 53 Gödel 53 Thomas Malthus 52 Niels Bohr 52 Carl Sagan 52 cosmologists 52 Charles Darwin 52 Prof Hawking 52 Werner Heisenberg 52 Eric Rignot 52 Isaac Newton 52 Hawking radiation 52 Feynman 51 Schrödinger 51 Lord Keynes 51 Charles Babbage 51 heliocentric 51 Mandelbrot 51 Nobelist 51 BF Skinner 51 Einstein theories 51 Richard Lindzen 51 Paul Tillich 51 nanobacteria 51 astronomer Carl Sagan 51 Frank Wilczek 50 Steven Pinker 50 Abraham Maslow 50 Crutzen 50 cosmologist 50 Einstein 50 Linus Pauling 50 Stephen Wolfram 50 journal Icarus 50 Cosmologists 50 Lavoisier 50 macroevolution 50 Peter Gluckman 50 Alan Turing 50 Arnold Toynbee 50 Selfish Gene 50 Robert Solow 50 galaxy formation 49 elementary particle physics 49 Rene Descartes 49 Bertrand Russell 49 evolutionist 49 Daniel Dennett 49 Douglas Mawson 49 Robert Heinlein 49 astrophysicists 49 scientism 49 Eric Hobsbawm 49 Hawking 49 cosmological 49 Astrophysicists 49 Gregor Mendel 49 quantum optics 49 Ed Weiler 49 Toutatis 49 Prusiner 49 theoretical physicists 49 Big Bang theory 49 astrobiologists 49 Einsteinian 49 physicists 48 palaeontology 48 cosmology 48 Karl Popper 48 Leroy Hood 48 photoelectric effect 48 AC Grayling 48 Neil deGrasse Tyson 48 Bahcall