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(Click for frequent words.) 50 Ellen Stofan 50 Dan Werthimer 49 Steven Cummer 49 Donald Ingber 49 Cassini ultraviolet 48 Nathan Kaib 47 Wick Haxton 47 Werthimer 47 Franck Marchis 47 Storrie Lombardi 47 Kevin Schawinski 46 Anthony Remijan 46 Michal Lipson 46 Ray Jayawardhana 45 electron microscopist 45 Bahram Jalali 45 paleoclimatology 45 Harold Urey 45 Miguel Nicolelis 45 Astrophysics Cambridge Mass. 45 Leonid Kruglyak 45 Ekaterina Dadachova 45 Gunda Georg 44 Dmitri Tymoczko 44 Gmachl 44 Tullis Onstott 44 Sushil Atreya 44 Grillmair 44 Mark Changizi 44 geomicrobiology 44 Stanford Synchrotron Radiation Lightsource 44 physicists chemists 44 Zhifeng Ren 43 Chunlei Guo 43 planetary geology 43 Ajay Royyuru 43 Spergel 43 Alessandro Morbidelli 43 Arno Penzias 43 Nicolas Dauphas 43 Ferenc Krausz 43 Lamont Doherty 43 Magnetars 42 Aydogan Ozcan 42 Hap McSween 42 Harold Craighead 42 Stassun 42 Federico Capasso 42 exo planet 42 Larry Soderblom 42 Nadrian Seeman 42 PSR B# +# 42 Observatory LDEO 42 geochemists 42 Mate Adamkovics 42 distant supernovae 42 dosimetrists 42 Harlow Shapley 42 Nasser Peyghambarian 42 Kuiper belt objects 42 David Spergel 42 hadron 42 novas 42 SSRL 42 Charles Beichman 41 Pascale Ehrenfreund 41 Nima Arkani Hamed 41 Don Gurnett 41 NASA Far Ultraviolet 41 Stefanie Komossa 41 planetary astronomer 41 Robert Jedicke 41 biologists geneticists 41 single celled microbes 41 exoplanetary 41 Jean Pierre Bibring 41 Leslie Orgel 41 Richard Mushotzky 41 Claus Mikkelsen 41 UA Steward Observatory 41 biophysicists 41 Adam Riess 41 Joel Primack 41 Bonnie Buratti 41 Dimitar Sasselov 41 prokaryote 41 Wolszczan 41 Tsunemi Kubodera 41 Gerard Kuiper 41 Smithsonian astronomer 40 Arkani Hamed 40 interstellar grains 40 detect gamma rays 40 Christopher Chyba 40 Carey Lisse 40 tomographic images 40 Christophe Lovis 40 Uwe Bergmann 40 Hossam Haick 40 Cosmic Microwave Background 40 Berkeley Geochronology Center 40 Zhong Lin Lu 40 Huchra 40 neutralinos 40 SNfactory 40 hunter gatherer populations 40 Michael Zolensky 40 Sandra Pizzarello 40 Pääbo 40 Geminga 40 Ordovician extinction 40 atmospheric neutrinos 40 Steward Observatory 40 bioluminescent bacteria 40 Kathryn Higley 40 slime molds 39 Kathy Rowlen 39 Andrea Ghez 39 scientist Richard Binzel 39 Schawinski 39 biophysicist 39 Rokhsar 39 Enrico Fermi Institute 39 X ray radiography 39 Raymond Jeanloz 39 George Djorgovski 39 Peter Capak 39 Niels Bohr Institute 39 lunar equator 39 MRC LMB 39 Wolfgang Ketterle 39 Dauphas 39 Deheyn 39 physics astronomy 39 Emmanuel Mignot 39 UCO Lick 39 theoretical astrophysicist 39 Microlensing Follow Up 39 planetary atmospheres 39 Mohammad Munim al Izmerly 39 Arlie Petters 38 Max Planck Institutes 38 LANP 38 synchrotrons 38 Telescope Array 38 Gamma ray burst 38 Nikku Madhusudhan 38 Peyghambarian 38 sterile neutrino 38 Jonathan Lunine Cassini 38 Paul Alivisatos 38 archosaurs 38 Svante Pääbo 38 Geoffrey Marcy 38 protoplanetary disks 38 Heike Riel 38 tomograph 38 Bruce Wielicki 38 William Happer 38 Jan Kleissl 38 Cassini magnetometer 38 Robert Blelloch 38 elliptical galaxy 38 Sumio Iijima 38 Andy Ruina 38 using multibeam sonar 38 Lapen 38 gravitational microlensing 38 Russell Doescher 38 CalTech 38 Scientists theorize 38 neurobiologists 38 Ulf Leonhardt 38 Evolution Explorer 38 Max Tegmark 38 solitary locusts 38 x ray scattering 38 Chad Mirkin 38 Shrinivas Kulkarni 38 prebiotic molecules 38 interstellar cloud 38 Auger Observatory 38 MINOS 38 Hedenstrom 37 Freie Universitaet Berlin 37 opossum shrimp 37 Heinrich Jaeger 37 Laura Grego 37 evolutionary anthropologist 37 Dana Yoerger 37 Fred Hoyle 37 Observatoire de Paris 37 Martin Guthold 37 Emanuel Derman 37 cardiologists radiologists 37 theoretical astrophysics 37 cometary material 37 Gravitational Physics 37 Alycia Weinberger 37 Erik Asphaug 37 Fermilab Tevatron collider 37 Henri Becquerel 37 faint galaxies 37 Raizen 37 Deep Impact Principal Investigator 37 ETH Zürich 37 Bart De Pontieu 37 Martian rovers 37 Awschalom 37 Robert Vrijenhoek 37 JBS Haldane 37 Villigen Switzerland 37 worm C. elegans 37 Yoel Fink 37 Yen Hsun Su 37 Caltech 37 Eric Becklin 37 Komossa 37 protons collide 37 Fermi LAT 37 supersymmetric particles 37 CIMSS 37 AB Aurigae 37 Cristina Chiappini 37 Phil Kuekes 37 tau neutrinos 37 Seth Putterman 37 NAOJ 37 quantum particles 37 Kailash Sahu 37 Crab pulsar 37 Krimigis 37 Saturn outermost ring 37 galactic bulge 37 Takao Someya 36 Shallow Radar 36 Jamie Elsila 36 Ronald DePinho 36 Vassilis Angelopoulos 36 CU Boulder ecology 36 Roald Hoffmann 36 Ketterle 36 SDSS II 36 KIPAC 36 observational cosmology 36 molecular biologists 36 NEAs 36 superstrings 36 Dharmendra Modha 36 NASA Jet Propulsion Lab 36 Aristeidis Karalis 36 ESO VLT 36 National Astronomical Observatory 36 scientists 36 Homo Erectus 36 neutrino telescope 36 PSR J# 36 moonlet 36 Astrophysicist 36 Yurii Vlasov 36 Jay Melosh 36 millisecond pulsar 36 magnetic monopole 36 Francis Halzen 36 Sanjiv Gambhir 36 NASA STEREO 36 Glenn Seaborg 36 scanning tunneling microscopes 36 Lawrence Krauss 36 computational biologists 36 MPQ 36 Epsilon Eridani 36 Avi Loeb 36 optical coherence 36 Illah Nourbakhsh 36 Niles Eldredge 36 Wilhelm Conrad Roentgen 36 Saul Perlmutter 36 Woese 36 Shuji Nakamura 36 physicists 36 Papovich 36 Maunder minimum 36 planets orbiting stars 36 Rasio 36 Galactic cosmic rays 36 CoRoT 9b 36 Leonard Kleinrock 36 Giovanni Cassini 36 planet Gliese #g 36 Uninhabited Aerial Vehicle 36 Jerry Brotzge research 36 Katlenburg Lindau Germany 36 Cosmic Background Explorer COBE 36 planets orbiting distant 36 preprint server 36 Angela Belcher 36 neutrino detectors 36 Suzaku X ray 36 Erlangen Nürnberg 36 Oganessian 36 Jordin Kare 35 constellation Cetus 35 Holonyak 35 RHESSI 35 Max Planck Institut fur 35 Super Kamiokande 35 gluon 35 Sungho Jin 35 Fermi telescope 35 Sudhof 35 multicellular animal 35 exoplanets planets 35 Ned Feder 35 homochirality 35 Higgs bosons 35 Eugene Wigner 35 Christiane Volhard 35 Margarita Marinova 35 particles WIMPs 35 Robert Trivers 35 weakly interacting 35 exosolar planets 35 Kenneth Libbrecht 35 Greg Beroza 35 moon Mab 35 biologists biochemists 35 zodiacal dust 35 Royyuru 35 Earthscope 35 Charpak 35 Orion nebula 35 icy comets 35 Theodor Hänsch 35 J Craig Venter 35 Garching Germany 35 local Agta tribesmen 35 absorbs photons 35 Institut Laue Langevin 35 Astrophysics MOA 35 Nature Nanotechnology paper 35 radial velocity technique 35 African cichlid fish 35 gravitational lenses 35 Movellan 35 slime mold 35 microscopic crystals 35 primate lineage 35 Santa Barbara UCSB 35 cosmic strings 35 x ray spectroscopy 35 polymer chemists 35 Leslie Vosshall 35 X rays gamma rays 35 fading afterglow 35 Murchison meteorite 35 Laboratory NSCL 35 Gondwana supercontinent 35 distant supernovas 35 killer whale predation 35 Pierre Auger Observatory 35 MD PhD UCSF 35 LiveScience 35 Susan Swithers 35 ROSAT 35 3He 35 Tenen 35 heliospheric 35 bioengineers 35 Jon Giorgini 35 ChemCam 35 Xerox Parc 35 Astrophysicists 35 distant galaxy clusters 35 diamagnetic 35 Forschungszentrum Dresden Rossendorf FZD 34 crinoid 34 rocky extrasolar planet 34 Marvin Marshak 34 JILA joint 34 Roland Piquepaille writes 34 Kazantzidis 34 Haymet 34 particle astrophysics 34 laser spectroscopy 34 Massimo Marengo 34 antihelium 34 Squyres Cornell 34 distant quasar 34 detect neutrinos 34 infall 34 ROCHESTER Minn. Mayo Clinic 34 radial velocity measurements 34 quantum physicist 34 electron neutrinos 34 merging galaxies 34 PNNL 34 forams 34 Steven Strogatz 34 Horanyi 34 MPIfR 34 Astrobiology Institute 34 Igor Kurchatov 34 Rayleigh scattering 34 Roukes 34 accelerator mass spectrometry 34 Lawrence Livermore Labs 34 gravitationally lensed 34 Srinidhi Varadarajan 34 CERN LHC 34 miscellaneous ramblings 34 Nancy Kanwisher 34 Keck telescope 34 Type 1a supernovae 34 physicist Max Planck 34 Don Eigler 34 Wilhelm Roentgen 34 Kary Mullis 34 CoRoT satellite 34 Wernher Von Braun 34 binary pulsar 34 Manchester Jodrell Bank 34 protocells 34 retrograde orbits 34 physicist 34 Nobel Prizewinning 34 ATLAS experiment 34 Starfire Optical Range 34 experimentally verified 34 probably carnivorous sponge 34 geoneutrinos 34 mycoplasmas 34 KamLAND 34 Fermi Lab 34 constellation Vulpecula 34 Martian crater 34 Ahmed Bayoumi 34 neutron spectrometer 34 lunar meteorites 34 NNIN 34 BaBar experiment 34 Technische Universitaet Muenchen TUM 34 circumstellar disk 34 Pier Oddone 34 eastern cougar subspecies 34 Shlomo Aronson 34 Beaulieu Lefebvre 34 energetic electrons 34 dosimetrist 34 Tokyo Denki 34 gravitons 34 neutralino 34 galactic halo 34 Neils Bohr 34 astrophysical phenomena 33 computational sciences 33 mantle plumes 33 physicists astronomers 33 Comet Halley 33 Roger Tsien 33 GQ Lupi 33 Selvamanickam 33 Fritz Haber Institute 33 Huygens mission 33 solar radii 33 Oparin 33 Wilhelm Rontgen 33 Wide Angle Search 33 stellar seismology 33 PPPL 33 ESA Integral 33 arXiv 33 Composite Infrared Spectrometer 33 NASA Isabella Velicogna 33 comet McNaught 33 nanobacteria 33 quasicrystal 33 imaging spectrometer 33 rare wekiu bug 33 Technische Universität München TUM 33 Supernova #A 33 smallest exoplanet 33 Laboratory SSRL 33 Quantum Institute JQI 33 particle physics experiments 33 MicroFUN 33 ultracool 33 Anisotropy Probe 33 tau neutrino 33 comet Hale Bopp 33 particle detectors 33 Gemini Observatory 33 cosmic particle detector 33 biomedical optics 33 mammalian neurons 33 Solar TErrestrial RElations Observatory 33 neuroinformatics 33 Particle accelerators 33 chemists physicists 33 regrow fingers 33 Vourlidas 33 type Ia supernova 33 attached magnetized bombs 33 UW Madison postdoctoral fellow 33 exo planets 33 Hubble Space Telescope HST 33 particle detector 33 JCR Licklider 33 Trathan 33 Lise Meitner 33 J# +# [002] 33 Vladimir Shalaev 33 Raytheon BBN 33 Medical Institute HHMI 33 Huygens descent 33 Richard Gilbrech 33 Postdoctoral Scholar 33 Tharsis Rise 33 Andre Geim 33 Kip Thorne 33 tholins 33 ribosomal subunits 33 physics astrophysics 33 Dr. Itzhak Fried 33 detect gravitational waves 33 osteologist 33 Boris Yakobson 33 synchrotron X ray 33 Pan STARRS 33 scanning electron microscopes 33 Lamarckian 33 Rainer Blatt 33 Theodore von Karman 33 meteoroid impacts 33 THEMIS satellites 33 Marvin Minsky 33 muon neutrino 33 brainstems 33 Kavli Institute 33 Supernova Cosmology Project 33 linear collider 33 physicists mathematicians 33 Exoplanets 33 Dan Durda 33 mapless 33 PASADENA Caltech 33 Chris Lintott 33 Regenstrief Institute affiliated 33 Stephen Gorevan 33 Pizzarello 33 Ari Melnick 33 Convection Rotation 33 asteroidal 33 Daniele Piomelli 33 Borexino 33 Neurobiologists 32 ETH Zurich Switzerland 32 spindle neurons 32 meter Keck telescopes 32 assumed planets circling 32 pediatric toxicologist 32 postdoctoral scholar 32 meteor fireball 32 neutrino beam 32 Cosmological Physics 32 Carnegie Mellon Robotics 32 Carolyn Edds 32 Kepler Mission 32 Mohsen Fakhrizadeh Mahabadi 32 microlensing events 32 planetary Transits 32 studying rats Panksepp 32 Johny Setiawan 32 GRB# 32 infalling 32 combinatorial libraries 32 Cathy Wos contributed 32 Rudolf Grimm 32 Donald Eigler 32 Kekule 32 Ph.D. postdoctoral associate 32 biologists physicists 32 graviton 32 Institute JBEI 32 hypothesized 32 Dansgaard 32 Ames Laboratory 32 Hiroo Kanamori 32 theoretical calculations 32 gamma ray emission 32 Vibrio fischeri 32 molecular biophysics 32 Nasa Ames 32 Harold Kroto 32 particle colliders 32 spectroscope 32 Hanny Voorwerp 32 WMAP satellite 32 Colin Pillinger Beagle 32 catalyze reactions 32 Gravitational lensing 32 Seth Shostak 32 orb weaving spider 32 renowned astrophysics observatory 32 particle physicist 32 protoplanet 32 elusive Higgs 32 attached magnetized 32 Andrei Linde 32 Stanford Linear Accelerator 32 glows brightly 32 particle smasher 32 physicists biologists 32 Leo Esaki 32 T2K 32 biochemists 32 spectral fingerprints 32 told physicsworld.com 32 supersymmetric 32 superluminal 32 advises Waas 32 Gerbrand Ceder 32 RPWS 32 beamline #.#.# 32 Bruce Banerdt 32 gamma ray observatory 32 George Gamow 32 Richard Vondrak 32 quantum cascade lasers 32 Physarum 32 Daina Taimina 32 Keck Telescopes 32 superfluids 32 Sakmann 32 ecologists biologists 32 Einstein equations 32 Maria Goeppert Mayer 32 optical interferometry 32 soliton 32 spaceborne 32 post doctoral fellows 32 quantum teleportation 32 Glenn T. Seaborg 32 QD Laser 32 astrobiologists 32 Benfey 32 ultrashort pulses 32 astronomer Percival Lowell 32 Scientists theorized 32 NSLS 32 evolvability 32 weak gravitational lensing 31 winged dinosaur 31 Schrödinger cat 31 Rensselaer Polytechnic Institute 31 galaxies collide 31 multipartite entanglement 31 Dennis Discher 31 COBE satellite 31 elongated orbits 31 Steven Girvin 31 astrophysicists 31 evolutionarily ancient 31 aeronautical engineers 31 smallest exoplanet ever 31 Ph.Ds 31 Werner von Braun 31 Ecole Polytechnique Fédérale de 31 clumpiness 31 Madhulika Guhathakurta 31 constellation Pegasus 31 Yakir Aharonov 31 Francois Bouchy 31 ultracold gases 31 deduced 31 LHCb 31 Cyprian honeybees 31 binary asteroid 31 earliest hominid 31 Technische Universitaet Muenchen 31 bosonic 31 Stanford Synchrotron Radiation 31 electronic excitations 31 serendipitously 31 supersolid 31 invisibility cloaking 31 protoplanetary disk 31 NASA Goddard 31 hypothesises 31 carbon cenospheres 31 Big Bang Illingworth 31 Fermilab accelerator 31 Jayant Narlikar 31 MBARI 31 geologists physicists 31 Laser Interferometer Gravitational Wave 31 theorized 31 planetary sciences 31 Collider Detector 31 Galileo Copernicus 31 collisional 31 kaons 31 Queloz 31 Higgs Boson particle 31 Centre Jülich 31 DISR 31 non coding RNA 31 Nasa Jet Propulsion 31 Planetary Transits 31 STScI 31 asteroid orbit 31 DZero collaboration 31 planets Kepler 31 Strogatz 31 evolutionarily 31 bdelloids 31 Maciej Konacki 31 Dikpati 31 Murray Gell Mann 31 outermost reaches 31 microsaccades 31 MIT linguist Noam 31 Lawrence Livermore Lab 31 Martin Chalfie 31 snugly tucked 31 moons orbiting Saturn 31 physicists chemists biologists 31 Bose Einstein condensates 31 PhD postdoctoral scholar 31 Hawking Radiation 31 enterotypes 31 DZero experiment 31 Wyss Coray 31 archaeologists anthropologists 31 Physicist 31 Chladni 31 nucleosynthesis 31 Hakan Svedhem 31 nucleons 31 sextillion stars 31 inertial confinement fusion 31 Anisotropy Probe WMAP 31 NINT 31 ESA Planck 31 Knep 31 Cavendish Laboratory 31 Lellouch 31 mathematicians statisticians 31 Freie Universität Berlin 31 mammalian brains 31 Santa Cruz UCSC 31 terahertz waves 31 larval fish 31 hawk moth 31 #gy 31 Oliver Knickel 31 Inder Verma 31 Sam Greenholtz 31 mutualistic 31 Mekalanos 31 Fermilab Tevatron 31 palaeontological 31 Kuchner 31 Yoichiro Nambu 30 Pam Soltis 30 heretofore unexplored 30 delusional parasitosis 30 methanogens 30 sunlike star 30 Matt Keennon 30 chlorophyll molecules 30 Majorana 30 millisecond pulsars 30 photosynthetic organisms 30 NASA THEMIS 30 Richard Garwin 30 Leon Festinger 30 COAPS 30 Quantum teleportation 30 strangelets 30 astronomers 30 antineutrinos 30 gamma ray photons 30 historians anthropologists 30 theoretical physicist 30 Optical Gravitational Lensing Experiment 30 Marx Freud 30 Max Lagally 30 Particle physics 30 electrons behave 30 photon beams 30 ray Space Telescope 30 Mike Montemerlo 30 Johannes Kepler 30 Southern Observatory ESO 30 wormholes 30 room temperature colliders 30 Tycho Brahe 30 quantum superposition 30 non baryonic 30 Osedax worms 30 superstring 30 quantum weirdness 30 astronomer Seth Shostak 30 supercollider 30 famed naturalist 30 LHC accelerator 30 Leonard Guarente 30 Scanning Tunneling Microscope 30 Schawlow 30 SPring 8 30 colliders 30 astrophysics 30 Ray Spectrometer 30 cyclotrons 30 NASA Cosmic Background 30 biologists mathematicians 30 ultracold 30 femtosecond timescale 30 vertebrate embryos 30 Barry Komisaruk 30 distant galaxy 30 Bleske Rechek 30 genetically encoded 30 galactic alignment 30 Endel Tulving 30 Homo sapiens evolved 30 Alvar Hanso 30 EPOXI spacecraft 30 barred owls migrated 30 hypothesize 30 silicon optical modulator 30 NOvA 30 Ecole Normale Supérieure 30 PhD postdoctoral fellow 30 condensations 30 absorbs photon 30 ATLAS detector 30 Napoleone Ferrara MD 30 wave particle duality 30 Werner Von Braun 30 Cancri 30 ideologic constraints 30 huitlacoche WEET LA 30 Phil Schewe 30 serotonin transporters 30 NASA JPL 30 Dean Pesnell 30 biologists chemists 30 GRB # 30 Cern Large Hadron 30 Barry Barish 30 Roddam Narasimha 30 vaguely resemble 29 substorm 29 EarthScope 29 Geoffrey Ozin 29 Bose Einstein condensate 29 neutrino 29 TCHY 29 NASA Fermi Gamma 29 planets orbits 29 Particle physicists 29 electrodynamics 29 Kawaler 29 superconducting electrons 29 experimenters 29 Physikalisch Technische Bundesanstalt PTB 29 ATLAS Experiment 29 placental mammal 29 hypothesizes 29 interplanetary spacecraft 29 Mario Livio 29 genomic rearrangements 29 faraway galaxy 29 reionization 29 postulated 29 Seaborg 29 Guy Wormser 29 Samuel Ting 29 MIT neuroscientists 29 BaBar 29 theoretical physicists 29 Sethian 29 nanotube coating 29 LIGO 29 MIT 29 neutron beams 29 biostatisticians 29 Type Ic supernova 29 NASA Kepler spacecraft 29 climatology meteorology 29 xanthus 29 interferometers 29 Star Trek transporter 29 Landsat satellites 29 subatomic particle 29 astronomical phenomena 29 Thirty Meter Telescope 29 MHC proteins 29 Yadin Dudai 29 X ray observatory 29 Cirac 29 visit http:/saturn.jpl.nasa.gov 29 theoreticians 29 planet Uranus 29 underground encasement 29 JILA 29 Poincaré 29 atom smashers 29 antihydrogen atoms 29 Hermann von Helmholtz 29 potassium atoms 29 dwarf spheroidal galaxies 29 concretions 29 meteor impacts 29 magnetic resonance spectrometer 29 anthropologists archaeologists 29 genome sequencer 29 emits X rays 29 Comet Hartley 29 Tehran Shahid Beheshti 29 Konstantin Tsiolkovsky 29 Relativistic 29 NanoScience 29 extinct ivory billed 29 Feynman diagrams 29 nanotechnologists 29 Erwin Schrodinger 29 nitroxyl 29 muon 29 theorize 29 Heisenberg uncertainty principle 29 heretofore undiscovered 29 infrared laser beam 29 LIGO Scientific Collaboration 29 synaptic proteins 29 wormhole 29 Heavy Ion 29 continuously erupting volcano 29 theta oscillations 29 Subrahmanyan Chandrasekhar 29 positron 29 Physicists 29 electron neutrino 29 Anton Zeilinger 29 Wormholes 29 genetically tractable 29 Director Charles Elachi 29 fluorescent dye molecules 29 solitons 28 Dmitri Denisov 28 Experts theorize 28 outermost planets 28 STFC Rutherford Appleton 28 ion collider 28 Kurt Godel 28 moons circling 28 nonlinear dynamics 28 spacetime 28 particle physics laboratory 28 cosmologists 28 solar neutrinos 28 surmised 28 accretion disk 28 coronal heating 28 vertebrate embryo 28 Vikhlinin 28 V# Sgr 28 engineers mathematicians 28 NASA Wilkinson Microwave 28 sterile neutrinos 28 CU Boulder Laboratory 28 Comet Hale Bopp 28 bioscientists 28 planetary orbits 28 reef organisms 28 electron spins 28 HRL Laboratories 28 Earth Connection Coronal 28 bought Glaxo Serevent 28 David Southwood ESA 28 atomically precise 28 Buckyball 28 Ocean Observatories Initiative 28 neo Darwinian 28 Mohsen Fakhrizadeh 28 amorphous calcium carbonate 28 V# Puppis 28 crocodile fossils 28 Neanderthal teeth 28 Von Heijne 28 ton Allosaurus 28 force microscopes AFMs 28 Commissariat à l' Énergie 28 retrograde orbit 28 van Arkel discovery 28 proton antiproton collisions 28 beamline