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(Click for frequent words.) 66 Hamish Pritchard 62 Michael Studinger 60 Ellen Stofan 60 Larry Soderblom 59 Rich Zurek 59 Victor Sardina 59 Cesar Lemas 59 Disko Island 59 Toni Carrell 59 Dan Buhl Planetarium 59 Samuel Oschin Telescope 58 Pu'u O'o crater 58 Tim Coughlin MAusIMM 58 Gamburtsev 58 Nunavut Territory coal 58 Bruce Banerdt 58 Jennifer Heldmann 58 Jay Zwally 58 Mark Bilsland BSc 58 Ontario Lacus 58 Umar Rosadi 58 Brigham Grette 57 abyssal plain 57 NASA rovers Spirit 57 Kristin Laidre 57 Peter Le Couteur 57 submersible Alvin 57 Dumont d'Urville station 57 bedrock outcropping 57 Roger Musson 57 Chajnantor plateau 56 Prof. Shakeel Romshoo 56 Gregory Asner 56 van Arkel discovery 56 seismologist Lucy Jones 56 seabed sediments 56 Adam Backlin 56 Bindschadler 56 Syrtis Major 56 USGS Cascades Volcano 56 lunar equator 56 Banerdt 56 CSIRO Wealth 56 Taurus Littrow 56 Kiruna Sweden 56 Chris Waythomas 56 Aqua satellite 55 Mount Bosavi 55 Venusian surface 55 Rosaly Lopes 55 Gavin Prideaux 55 whiz harmlessly 55 ICESCAPE 55 Manchester Jodrell Bank 55 Lake Vui 55 abyssal plains 55 Sutiono 55 Claudia Tebaldi 55 Scott Luthcke 55 Bill Borucki Kepler 55 sun Pankaj Bhama 55 Jane Ferrigno 55 Dr. Jeffrey Peipert 55 David Wettergreen 55 Uwe Bergmann 55 Klekociuk 55 Hellas Planitia 55 Jeffrey Bozanic 55 Carolyn Driedger 55 Svalbard Islands 55 COROT 7b 55 constellation Carina 55 Alfred McEwen 55 Robert Vrijenhoek 55 Mota Lava 55 Sugata Hazra 55 Upsilon Andromedae b 55 Schellart 55 excavate trench 54 Linda Calabresi 54 Tharsis Rise 54 Kermadec Arc 54 Grimsvotn lies 54 Andrew Glikson 54 Robert Marvinney 54 Norway Svalbard 54 Crozet Islands 54 Chazy Reef 54 Waleed Abdalati 54 Jacqueline Savitz marine 54 Strathcona Fiord 54 Lake Untersee 54 Andaman Islands quake 54 Depth SAFOD 54 Richard Vondrak 54 pliosaur ferocious predator 54 Landsat satellite 54 Dr. Martin Rundkvist 54 Jenniskens 54 digital photogrammetry spatial 54 GFZ German 54 swirling dust devils 54 Kurt Retherford 54 Natalia Rybczynski 54 Charles Musyoki 54 Composite Infrared Spectrometer 54 Jay Famiglietti 54 planetary geology 54 rover Spirit landed 54 equatorial plains 54 Lida Pet Soede 54 Edith Widder 54 Ghassem Asrar 54 polar plateau 54 Weddell Sea 54 Von Frese 54 George Bekey robotics 54 Gerasimos Papadopoulos 54 Harvard Smithsonian Astrophysical 53 Chicxulub Crater 53 deepest darkest abyss 53 IFM GEOMAR 53 Arctic Coring Expedition 53 Julia Slingo 53 Jonathan Lunine 53 Peter Eisenhardt 53 Michael Blanpied 53 Linda Elkins Tanton 53 Gerard Kuiper 53 Milensky 53 Geological Survey Cascades Volcanic 53 Southampton Oceanography 53 Storrie Lombardi 53 Matt Sayers 6News 53 moon permanently shadowed 53 Jeffrey Kargel 53 Molucca Sea 53 Shiveluch 53 Lori Dengler 53 Bernard Foing 53 volcano observatory 53 Jørn Hurum 53 Alexander Goncharov 53 Valles Marineris canyon 53 Patna Neelmani 53 Mark Hindell 53 William Kininmonth 53 Stuart Haszeldine 53 Gliese #G 53 Qiang Fu 53 Kanaga Volcano 53 southern supercontinent 53 Svalbard islands 53 Squyres Cornell 53 Khumbu Glacier 53 Haughton Crater 53 Kelvin Berryman 53 Shane Ebert P.Geo 53 Martin Haehnelt 53 UCL Mullard Space 53 Minik Rosing 53 Perseus Cluster 53 Planetary Geology 53 Foing 53 Disko Bay 53 Scientists Iceland Grimsvotn 53 Cabo Corrientes Mexico 53 Zhao Xijin 53 Transantarctic Mountains 53 Saturn Enceladus 53 Anthony Colaprete LCROSS 53 William Bottke 53 Himalayan river basins 53 Ken Hudnut 53 Jean Pierre Bibring 53 IODP Expedition 53 Institute MBARI 53 Roland Burgmann 53 Vastitas Borealis 53 Amish buggies clatter 53 JOIDES Resolution 53 Richard Binzel 53 roundworms dominate 53 Kim Raum Suryan 53 THEMIS satellites 53 Mars Orbiter Camera 52 lunar meteorite 52 Titan smoggy 52 scientist Anthony Colaprete 52 Son Nghiem 52 Cerro Pachon 52 Rolf Kudritzki 52 Nihoa Island 52 ship Akademik Fyodorov 52 Infrared Pathfinder Satellite 52 Tomas Charris Uniandina 52 erupting lava 52 Svalbard archipelago 52 Brunt Ice Shelf 52 QP NI# 52 CoML 52 ESA Envisat 52 Bonnie Buratti 52 Climber survives 52 Robotic Exploration 52 Peter Jenniskens 52 maritime subsurface 52 Syamsu Rizal 52 Maya Tolstoy 52 rover panoramic 52 Sarah Parcak 52 ESA GOCE 52 Finland GTK 52 Dorthe Dahl Jensen 52 Anthony Remijan 52 Sojourner rover 52 Kewaunee Scientific website 52 faint smudge 52 Hubert Staudigel 52 Philip Mote 52 Gerhard Schwehm 52 Inters MORE 52 Delos Tucker 52 Donald Yeomans 52 Coast Guard icebreaker Healy 52 David Wald seismologist 52 Chodas 52 Kii Peninsula 52 Laysan Island 52 Zacaton 52 Tom Kilbey Sr. 52 telescope atop Mauna 52 Umnak Island 52 Jean Pierre Lebreton ESA 52 vast Myrdalsjokull ice 52 ° #'N 52 Bransfield Strait 52 Gamma ray burst 52 forecaster Helen Chivers 52 Franck Marchis 52 Redoubt blew 52 Louise Prockter 52 Maria Zuber 52 Wakibara 52 Louis van Tilborgh 52 Southampton NOCS 52 ESA Herschel 52 Chajnantor 52 Chilean Atacama Desert 52 Cassini radar 52 gamma ray observatory 52 spokeswoman Clarice Ransom 52 Cayman Trough 52 Lamont Doherty 52 Pu'u O'o vent 52 Qaanaaq 52 species Ardipithecus ramidus 52 Cygnus Lyra region 52 Nansen Environmental 52 greatest insect emergences 52 Villy Christensen 52 Doug Inkley senior 52 vast Gusev Crater 52 Hellas Basin 52 Steve Lohrenz biological 52 Planetary Fourier Spectrometer PFS 52 Firouz Naderi 52 Mars Squyres 52 MARSIS radar 52 Triyani 52 Punta Sur 52 Michael Zolensky 52 MG J# +# 52 past boninite lavas 52 Terra Sirenum 52 Isidis Planitia 52 Ed Laguerta 52 Orientale Basin 52 Amundsen Sea 52 Rosemary Gales 52 glaciated terrain 52 Palaeozoic sedimentary 52 laser altimetry 52 Medina Mejia 52 Eduardo Zorita 52 GNS Science 52 Wick Haxton 52 Tas van Ommen 52 lunar meteorites 52 Cendrawasih Bay 52 Convection Rotation 51 Ira Leifer 51 N. Rathnasree 51 Arik Posner 51 Dan Dzurisin 51 Saturn Cassini 51 Peru Geophysics 51 interferometric synthetic aperture radar 51 Caloris Basin 51 PGeo geologist 51 Reneke 51 gaseous planet 51 Submillimeter Array 51 Neukum 51 Aberdeen Oceanlab 51 Neuherberg Germany 51 Jupiter moon Io 51 Pete Ewins 51 RV Polarstern 51 Di Achille 51 Margaret Leinen 51 outcrop stripping 51 Stephane Mazzotti 51 Franco Barberi 51 Greenland glacier 51 Jean Marc Lulin 51 giant squid Architeuthis 51 Anthony Barnosky 51 Jeffrey Plaut 51 buckypaper virtually 51 Ian McShane Pillars 51 Syahnan 51 Great Barrier reef 51 Richard Luckett seismologist 51 Chillan Chile 51 northern Ryukyu Islands 51 geophysics prospecting 51 Shiga farmhouse 51 eyepiece #/#s f/#.# 51 Orjan Gustafsson 51 Nicholas Conard 51 Akri Bijeel block 51 Hakan Svedhem 51 Fermi telescope 51 geochronology 51 Haraldur Sigurdsson 51 Gakkel Ridge 51 Bonneville Crater 51 waitress Ingrid Sufan 51 Buehler Planetarium 51 Beardmore Glacier 51 Gregory Skomal 51 Chris Rapley 51 Saharan Desert 51 Martian terrain 51 ESRL 51 Wettergreen 51 kimberlite outcrop 51 Pavel Kroupa 51 Bette Otto Bliesner 51 Roger Bilham 51 Jacob Verhoef 51 Uranus Jupiter 51 Christian Marcussen 51 Technology JAMSTEC 51 Kepler 9c 51 Galilean satellites 51 Diviner instrument 51 arctic plains 51 Mahmoud Afifi 51 Terra Meridiani 51 Cape Otway 51 Hilia Vavae 51 Mount Karthala 51 smoothest flattest spot 51 THEMIS Images 51 Orbiter MRO 51 Denisova Cave 51 Arabia Terra 51 Sermilik Fjord 51 WISE telescope 51 Ratdomopurbo 51 Hawaii Mauna Kea 51 Opportunity rover 51 Kangerlussuaq Greenland 51 Rainer Klement 51 Rinca island 51 Ahmad Zakir 51 Mount Karangetang 51 Luis Chiappe 51 Sella Pass 51 Mars Meridiani Planum 51 Comet C/# P1 McNaught 51 Abigail Allwood 51 Steve Squyres 51 Autosub 51 Gaetano Di Achille 51 Fred Kavalier 51 laser altimeter 51 Planetary Physics 51 sedimentary deposits 51 John Boockvar neurosurgeon 51 Henry Heasler Yellowstone 51 Scott Shalaway 51 Changcheng Station 51 Zeebe 51 Wolszczan 51 Tara Dudzik 51 Agus Budianto 51 Mt Ruapehu crater 51 SkyCenter 51 Auctioneer T. rex 51 Jay Melosh 51 McMurdo Station Antarctica 51 Chukotka Mining 51 Polar explorers 51 Tad Pfeffer 51 NCAR sponsor 51 Joel Primack 51 Erik Pounders 51 Henry Bortman 51 Seismologist Dale Grant 51 Maria Karayiorgou 51 Moderate Resolution Imaging 51 Priyamvada Natarajan 51 Cliff Frohlich 51 Mars moon Phobos 51 Tom Brocher 51 asteroid Eros 51 Stephane Udry 51 Eran Hood 51 By Rossella Lorenzi 51 Explorer WISE 51 Son Doong 51 Norne field 51 Synte Peacock 51 Nasa Jet Propulsion 51 Julian Gutt 51 Jennifer Pralgo hurricane 51 Uninhabited Aerial Vehicle 51 MBARI 51 called lobate scarps 51 Brendan Godley 51 Nankai Trough Zone 51 Laurasia 51 Bruce Molnia 51 Ionospheric Sounding 51 Jim Kauahikaua 51 northern arctic plains 51 Fiona Thornewill 51 Glaciologist 51 Nasa spacecraft 51 Dronning Maud Land 51 Rignot 51 Nili Fossae 51 granitoid rocks 51 Buzzard Coulee 50 Wieslaw Maslowski 50 Robin Canup 50 sub glacial lakes 50 freshwater stingray 50 Cascadia fault 50 temperamental Soufriere Hills 50 Erik Asphaug 50 ESA ASI 50 Canadian Julie Payette 50 Mariana Arc 50 Jean Pierre Lebreton 50 Brenda Ekwurzel climate 50 Yun Qian 50 Jean Charcot 50 Phil DeCola 50 ESR forensic 50 Blair Trewin 50 Chip Groat 50 Hugo Yepes 50 Ionosphere Sounding 50 Ed Weiler 50 Josefino Comiso 50 twin rover Spirit 50 Zeresenay Alemseged 50 Cascade Volcano Observatory 50 removing bolted flange 50 HiRISE camera 50 geomicrobiology 50 undersea volcanoes 50 Alexey Maryshev 50 asteroid Steins 50 Cassini flyby 50 Kirishima range 50 Kunlun Station 50 Guglielmo Marconi experiments 50 UQ Diamantina Institute 50 NASA EPOXI mission 50 Brian Baptie 50 Sujoy Chaudhuri 50 Giovanna Tinetti 50 George Christophides 50 Oceans Flagship 50 hydrothermal vent 50 #/#-# S [002] 50 meteorological oceanographic 50 Cobourg Peninsula 50 Alain Hupe 50 twin Voyager spacecraft 50 Siberut Island 50 Eridanus 50 Valles Marineris 50 Campos Basin offshore 50 Ryosuke Motani 50 Kristina Pydynowski Senior 50 Arsia Mons 50 Christos Zerefos 50 Lapen 50 submersible robot 50 Albanian geologists geophysicists 50 Spitsbergen Norway 50 Agostino Da Polenza 50 Ayelet Dayan 50 seismic faultlines 50 drifting ice floe 50 using multibeam sonar 50 Furnes 50 William Happer 50 midlatitudes 50 Okmok Caldera 50 Cassini magnetometer instrument 50 Prawle Point 50 windshield wiper maneuver 50 Mary Lou Zoback 50 Ken Gledhill 50 Sawmill Own 50 moon Phobos 50 Mary Voytek 50 Ferenc Krausz 50 geologist Jennifer Adleman 50 Diana Schendel 50 Tumi geologist 50 Roy Dokka 50 cratered highlands 50 Circinus 50 Mount Erebus 50 Sobakam 50 absorbs photons 50 Fred Prata 50 Coso Junction 50 Dumont d'Urville scientific 50 Shinji Toda 50 Alaska Fairbanks Geophysical 50 ESO Paranal Observatory 50 telescopic observations 50 SpaceX splashed 50 Oceanus Procellarum 50 Madhulika Guhathakurta 50 NASA CloudSat 50 geohazard 50 mud volcanoes 50 Boar Tusk 50 Ny Ålesund 50 DEPTHX 50 rover Sojourner 50 Lake Cheko 50 Ground penetrating radar 50 Frederic Pont 50 Kepulauan Mentawai region 50 Ted Molczan Canadian 50 Mars Color Imager 50 intraplate 50 Planetary Transits 50 Planitia 50 asteroid Vesta 50 Amir Farid Isahak 50 comets moons 50 microbialites 50 National Astronomical Observatory 50 Plaza Huincul 50 Gawis 50 Shirshov Institute 50 Bruno Werz 50 Puajanca Zone 50 aboard HMS Beagle 50 aboard ESA Envisat 50 Bruce Wielicki 50 Blackford Dolphin 50 Nasa Kepler 50 Duane Froese 50 McDonald Aeberli Funeral Home 50 Josh Wurman 50 Martian rovers 50 geomagnetism 50 Whillans Ice Stream 50 Dirk Hartog Island 50 Denisova cave 50 laboratory Skylab 50 Nautile 50 Earthscope 50 Jock Wishart 50 marine geologist 50 USGS Hawaiian Volcano 50 Reconnaissance Orbiter 50 Tsunemi Kubodera 50 Hurghada Environmental Protection 50 Jon Ove Hagen 50 boreal regions 50 Nakanai Mountains 50 NASA MODIS 50 AMASE 50 Igor Semiletov 50 barren expanse 50 Volcano erupts 50 Curt Graeber former 50 Saut Simatupang 50 Martian crater 50 Darwin Mounds 50 Martian plains 50 Volcano Observatory 50 Interior Laboratory GRAIL 50 Peter Makovicky 50 Julia Fiorino 50 Roger Musson seismologist 50 coldest driest 50 Angelika Brandt 50 thermal vents 50 evaporite deposits 50 Meteoritics 50 Ray Berkelmans 50 Walruses dive 50 Shuttle undocks 50 resist tidal surges 50 Krafla 49 Nankai Trough 49 Lake Yoa 49 Tony Bayaoa whose 49 Kepler Mission 49 Vivian Fuchs 49 glaciers icebergs 49 Plaza Huincul Argentina 49 Muchachos Observatory 49 Cape Alava 49 Gehring minivan 49 Mark Rowlett KTXS 49 Janet Monge 49 Onagawa Miyagi Prefecture 49 Nasa Mars Reconnaissance 49 calving glacier 49 smallest exoplanet 49 Saturnian moon Titan 49 region barren expanse 49 Fendorf 49 Bernard Doft 49 Cape Adare 49 Gusev crater 49 Shuang Zhang 49 amateur astronomers peering 49 Berkeley Seismological Laboratory 49 exo planet 49 Le Quéré 49 Megathrusts occur 49 Huygens descent 49 Caltech Seismological Laboratory 49 Alex Sosnowski Expert 49 Seepage detected 49 CoRoT satellite 49 Mate Adamkovics 49 Tod Strohmayer 49 Terry Engelder 49 Cyclone Aila battered 49 Itilima 49 hilly rocky 49 Philae lander 49 Odd Aksel Bergstad 49 ALS Chemex assaying 49 Shea Penland 49 EarthScope 49 Shallow Radar instrument 49 date Argentinosaurus 49 John Grotzinger 49 LRO spacecraft 49 TrES 4 49 Commander Sergei Volkov 49 Rene Heroux 49 Microbiologist Cynan Ellis 49 Opposes drilling 49 Abdalati 49 Kilauea eruption 49 John Callas rover 49 planet Gliese #g 49 Middle Awash 49 geodesy 49 Irene Mona Klotz 49 rocky extrasolar planet 49 Ernie Goss oversees 49 stream sediment geochemical 49 Kahlbaum 49 magnetospheric imaging instrument 49 Cerro Paranal 49 Kauahikaua 49 Digitalglobe 49 Blainville beaked whales 49 basaltic rocks 49 Jean Sebastien Lavallee P.Geo 49 geologist Dan Dzurisin 49 Hayabusa capsule 49 Satish Dhawan 49 remote Afar 49 Tingay 49 sized planets orbiting 49 Winston Seiler 49 fissure eruption 49 Andrew Derocher 49 Robert Sarmast 49 Andreas Heinrich 49 Paleoclimate 49 Ehud Shapiro 49 Mars CRISM 49 Colaprete 49 smoggy atmosphere 49 AERONET 49 Jan Gunnar Winther 49 Baross 49 IUCN Species Programme 49 Ice Coring 49 Werthimer 49 planetary surfaces 49 humble pseudonymous surgeon 49 Jessica Sigala 49 Duncan Wingham 49 Chryse Planitia 49 Arlen Huggins 49 Nikolay Ovcharov 49 Kazakhstan steppe 49 mantle lithosphere 49 Kinyambwiga gold 49 Imaging Spectroradiometer MODIS instrument 49 van der Borgh 49 extinct volcanoes 49 geoscientific 49 ray Space Telescope 49 Giovanni Schiaparelli 49 Johannes Lehmann 49 fossilized skull 49 Cittareale 49 Donald Johanson 49 Stardust capsule 49 Roque de los 49 shadowy craters 49 Puijila 49 TSN PZ camera 49 Mars Analog Svalbard 49 Sorcerer II 49 Caloris 49 Postberg 49 affects hibernating bats 49 Charon Pluto 49 Karangetang 49 Kennicutt 49 ERDAS creates 49 Sipiera 49 airborne geophysics geological mapping 49 EADS Astrium GmbH 49 Geological Survey BGS 49 NGRI 49 Jennifer Rodi 49 vertebrate palaeontology 49 Discoverer Spirit 49 Eric Rignot 49 Sebastian Vizcaino 49 Halil Rud 49 sulphide stringer 49 EPOXI spacecraft 49 Thomas Goreau 49 drillship Discoverer Enterprise 49 Flattops Prospect located 49 Endeavour Crater 49 Herb Thoms 49 cenospheres 49 Freie Universitaet Berlin 49 ESA ERS 49 Mitchell Sogin 49 THEMIS Image 49 Zhimin Xu 49 WISE spacecraft 49 constellation Eridanus 49 Franz Josef Glacier 49 located atop Mauna 49 Wilkinson Microwave Probe 49 CRISM 49 Nelis Zuliastri 49 steam eruptions 49 Berinstain 49 Spitzbergen 49 Steven Hatfill bioterrorism 49 Dan Cristol 49 permanently shadowed crater 49 Bryce Vissel 49 Kaiga township 49 Kasatochi 49 Navy copter crashes 49 Store Norske 49 Oceanography Centre 49 Nikku Madhusudhan 49 High Altitude Observatory 49 GKSS Research 49 North Greenland Eemian 49 MARSIS instrument 49 refrozen ice 49 Chasma Boreale 49 volcanologist Agus Budianto 49 Abdulla al Shimary 49 Heliospheric Observatory SOHO 49 Domack 49 Gene Kritsky 49 Pierre Simon Laplace 49 airglow 49 Antarctic Dry Valleys 49 Tasiilaq 49 Mission SRTM 49 Thure Cerling 49 Cape Solander 49 Jan Zalasiewicz 49 Stephan Guenther 49 Saqqara necropolis 49 southwestern Kyushu 49 Imaging Spectroradiometer 49 Hagan Bayley 49 Grímsvötn volcano 49 THEMIS mission 49 Martin Sommerkorn 49 Laetoli 49 dry lakebeds 49 UAF Geophysical Institute 49 Trigatti 49 seafloor sediments 49 Otto Bliesner 49 Giovanni Cassini 49 UW Applied Physics 49 Yellowstone Volcano Observatory 49 Ultraviolet Imaging Spectrograph UVIS 49 Shallow Radar 49 ESA Planck 49 Raukumara 49 mountainous Altai 49 LSB Leakey Foundation 49 orbiting Kepler telescope 49 NASA Lunar Crater 49 Jupiter moons Europa 49 subsurface ocean 49 de Pater 49 aboard Taurus XL 49 glaciology 49 Orbiter LRO 49 Powerful quake jolts 49 astronomer Percival Lowell 49 smoothest flattest 49 band Nunatak 49 Axel Heiberg Island 49 Eske Willerslev 49 Hiker survives 49 Steve Amburn 49 P Churyumov Gerasimenko 49 Malcolm Fridlund 49 neutrino telescope 49 Ohmoto 49 Sara Seager 49 Sangihe Island 49 Rutford 49 interstellar dust samples 49 meteorologist Jack Beven 49 Sicily Mount Etna 49 seafloors 49 La Silla Observatory 49 Vara Blanca 49 Martin Tomasko 49 Russell Reichelt 49 Julienne Stroeve 49 volcano spewed ash 49 Starfire Optical Range 48 Shuttle Atlantis blasts 48 robotic submersible 48 MODIS 48 Nasa Ames 48 West Quoddy Head 48 Jens Vellev professor 48 Berkelmans 48 Svalbard Norway 48 Anvers Island 48 Climate Adaptation Flagship 48 UM Rosenstiel School 48 Cenozoic Era 48 Sangihe island 48 Nevada Seismological Laboratory 48 Tararua Range 48 Inez Fung 48 telescopes atop Mauna 48 previously unmapped 48 Kawishiwi 48 phyllosilicate 48 Nares Strait 48 Antarctica EPICA 48 Landsat satellites 48 OneGeology 48 Gisela Winckler 48 constellation Lacerta 48 Society ProLiteracy 48 Typhoon Mirinae weakened 48 Riverbluff Cave 48 asteroids orbiting 48 Cerro Pachón 48 icefield 48 Descent Imager Spectral Radiometer 48 Longyearbyen Norway 48 Reflection Radiometer ASTER 48 Fran Bagenal 48 Rosetta spacecraft 48 paleomagnetic 48 Officer Kirchinger 48 constellations Cygnus 48 Dr Brian Baptie 48 SAFOD 48 HARPS instrument 48 Roni Alberto 48 Gas Hydrate 48 Prydz Bay 48 Halemaumau 48 Pacific Gyre 48 Amery Ice Shelf 48 Andres weakens 48 ancient supercontinent 48 Rick Grammier Deep Impact 48 HARBOR BRANCH 48 Mark Zoback 48 Appy Sluijs 48 penetrating radar 48 El Chichon 48 semidesert 48 Keathley Canyon block 48 Robert Bindschadler 48 Krimigis 48 Moderate Resolution 48 Geochemical analysis 48 India Science Popularization 48 Rando Allikmets 48 Kamoamoa eruption 48 Matthias von Herrath 48 Jedicke 48 Geobiology 48 Lophelia II 48 Dan Bahat 48 Alberto Behar 48 Stuart Sipkin 48 autonomous Xinjiang Uyghur 48 bedrock outcrops 48 Nutty Putty cave 48 MOL K2 48 Virtual Planetary Laboratory 48 Claes Wahlestedt 48 Detailed geological mapping 48 Tina Stall 48 Copeia 48 Mr. Zhu Weilin 48 comets meteors 48 HMS Beagle 48 Jaekelopterus 48 Louis Stodieck 48 Dave Garshelis 48 Puerto Rico Trench 48 Avishay Gal Yam 48 Neogene 48 prehistoric Qesem cave 48 Dean Pesnell 48 Emeishan 48 Victoria Crater 48 Brian Lezina state 48 Piper Lancer 48 Admiral Makarov 48 Earthly contamination 48 microscopic radioactive particles 48 Saqqara pyramids 48 Jody Bourgeois 48 long necked sauropod 48 Andean Cordillera 48 Mount Mabu 48 swollen Marikina 48 Leeanne Alonso 48 moon Mab 48 Razzak Abdul Zahra 48 NASA rover Spirit 48 cutter Munro 48 Shuttle Atlantis undocks 48 Syun Ichi Akasofu 48 Cryospheric Sciences Branch 48 Climber dies 48 Shepherding Spacecraft 48 Compton Gamma Ray 48 Eyemouth Berwickshire 48 Cloud Aerosol Lidar 48 Great Observatories Origins 48 km ENE 48 Russia Kamchatka volcanoes 48 Martian arctic 48 Peril Strait 48 John Bargmann FGS 48 Konrad Steffen 48 Sedimentary Geology 48 McMurdo Dry Valleys 48 Curiosity rover 48 twin STEREO spacecraft 48 Willerslev 48 Vatnajökull