Related by context. Frequent words. (Click for all words.) 66 Brahe 47 Tutankhamen 47 Oetzi 45 Voyager spacecraft 45 Astronomers 45 astronomers 45 NASA ESA Hubble 44 Opportunity rover 44 Archeologists 44 Herodium 44 Saturn rings 44 royal tombs 44 NASA Kepler 44 cosmologists 44 ancients 44 Comet Tempel 1 44 Turin Shroud 44 Henri IV 44 cosmic microwave background 44 Higgs Boson 44 globular clusters 43 radiocarbon dating 43 comet 43 comet nucleus 43 X ray Observatory 43 orbiting telescope 43 NASA Chandra 42 super Earths 42 supernova explosion 42 comet dust 42 Eta Carinae 42 Galaxy Evolution 42 Tut tomb 42 XMM Newton 42 galaxy formation 42 COROT 41 Step Pyramid 41 tomb 41 subatomic particle 41 infrared telescope 41 Byzantine era 41 Archaeologists 41 Saturn moons 41 Saturn moon Enceladus 41 Egyptian mummies 41 astrobiologists 40 Astronauts aboard 40 astronomical observatory 40 quasars 40 pharaoh 40 NASA Hubble Space 40 moon Europa 40 microlensing 40 Zahi Hawass Egypt 40 WMAP 40 royal mummies 40 distant galaxies 40 physicists 40 comets 40 astronomical observations 40 burial cloth 40 Hubble observations 39 planetary nebulae 39 Gamma ray bursts 39 Very Large Array 39 Scientists 39 fossilized remains 39 Physicists 39 archeologists 39 orbiting Mars 39 stele 39 bluestones 39 amphora 39 elliptical galaxies 39 asteroid 39 quark gluon plasma 39 solar nebula 39 supernova explosions 39 Cassini spacecraft 39 OGLE 39 PASADENA Calif. NASA 39 Akhenaten 39 Crab Nebula 39 Egyptian pyramids 39 Spitzer Space Telescope 39 sarcophagus 39 Egyptologists 39 coprolites 39 WM Keck Observatory 39 GRB # 39 ancient Babylon 39 archaeologists 39 supernova remnant 39 tomb raiders 39 Khufu 38 Hindu god Vishnu 38 NASA Cassini spacecraft 38 Cassini Huygens 38 Gliese #g 38 ringed planet 38 supernovas