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(Click for frequent words.) 56 xenon propellant 53 Aerogels 49 Microgravity 48 scramjets 48 Space Capsule 48 ARCTUS 48 ultracold temperatures 47 Muons 47 Shuttle Docks 47 DragonLab 46 Huygens Probe 46 chemically reactive 46 geo synchronous 46 ST5 45 O OREOS 45 moondust 45 Foton M3 45 Viscoelastic 45 Lunar Rover 45 nanosheets 45 ARGUS IR 45 Weightless Wonder 45 Spacesuit 45 microgravity experiments 45 microgravity environment 45 Atlantis Undocks From 44 SpaceShip 44 electrothermal 44 Weightlessness 44 reentry capsule 44 Exoskeleton 44 dexterous robot 43 simulated lunar 43 MISSE 43 Venus Climate Orbiter 43 Kibo JPM JEM Pressurized 43 Zero Gravity Flight 43 Extra Vehicular Activity 43 Hubble orbits 43 teleoperated 42 ultracold atoms 42 Apollo Skylab 42 Pegasus XL 42 Scramjets 42 bacterium Bacillus subtilis 42 planetary Transits 42 Suborbital 42 Human Spaceflight Microgravity 42 retroreflector 42 middeck 42 ionise 42 neutron spectrometer 42 particle acceleration 41 NASA Microgravity 41 IBEX spacecraft 41 Shenzhou spacecraft 41 Mars# 41 ion thrusters 41 antigravity 41 DMSP F# 41 hydrogen isotopes 41 hypergolic 41 electric ion propulsion 41 femtosecond laser pulses 41 Spacewalks 41 extravehicular mobility units 41 Altair lunar lander 41 Teleportation 41 microgravity 40 LOCAD PTS 40 Mars Pathfinder lander 40 Daniel Sacotte ESA 40 non Newtonian fluids 40 planetary surfaces 40 lunar landers 40 breathable oxygen 40 uncrewed 40 SpaceX Dragon 40 Manned Maneuvering Unit 40 unpowered glider 40 Spacewalking 40 humanlike robot 40 Orbital Module 40 breathing supersonic combustion 40 Terrier Orion 40 scramjet engine 40 Phobos Grunt 40 scramjet engines 39 albedo reflectivity 39 shuttle middeck 39 gravitational acceleration 39 Lunar Module Pilot 39 Earth orbit LEO 39 duration spaceflights 39 supersonic combustion ramjet 39 Tropospheric Emission Spectrometer 39 BioSuit 39 nanometric 39 Virgin Galactic unveils 39 supercooled liquid 39 Rayleigh scattering 39 Huygens descent 39 polystyrene beads 39 extravehicular activities 39 Red Bull Stratos 39 electrostatics 39 Jupiter Ganymede 38 simulate weightlessness 38 LSAM 38 reusable spacecraft 38 WISE spacecraft 38 Mars# experiment 38 interplanetary spacecraft 38 Cargo Ship Docks 38 Kavandi 38 Spacehab module 38 unpowered glide 38 Saturnian moon Titan 38 visco elastic memory 38 unstowed 38 SPACE STATION 38 Foton M2 38 exo skeleton 38 situ measurements 38 moon #/#-gravity 38 Solar TErrestrial RElations Observatory 38 deorbit 38 Centennial Challenges 38 Daniel Tani hooked 38 bosonic 38 Mars #/#-gravity 38 Weightless 37 robotic rover 37 vapor mist 37 Advanced Diagnostic Ultrasound 37 THEMIS Images 37 orbital insertion 37 spacecrafts 37 Astronaut Leroy Chiao 37 ramjets 37 emits photon 37 simulated Martian 37 graphite epoxy 37 Kounotori 37 Space Station 37 microrobot 37 Gyroscopic 37 electrically conducting 37 GEochemistry 37 hypersonic flight 37 Martian rover 37 specially instrumented 37 carbon nanotube composite 37 Plane OSP 37 Russian cosmonaut Yuri Usachev 37 hypersonic speeds 37 manned Shenzhou 37 MER rovers 37 Orlan suits 37 relativistic particles 37 NASA Stardust spacecraft 37 spacesuit 37 spacecraft SpaceShipTwo 37 macroscopic objects 37 lander rover 37 stratospheric balloon 37 Kapton tape 37 simulated microgravity 37 Foundation Weightless Flights 36 SpaceshipTwo 36 circumlunar 36 hypersonic 36 colloidal particles 36 wingsuits 36 cobalt atom 36 superstrong 36 comet particles 36 SpaceShipTwo SS2 36 ESA GOCE 36 SpaceX Falcon 9 36 SOLO TREC 36 hexapod 36 martian atmosphere 36 moonbase 36 ion propulsion 36 scramjet propulsion 36 orbiters landers 36 lunar dust 36 spaceplane 36 sub orbital spaceflight 36 Kliper 36 landing VTOL 36 Elliptical machines 36 Orion Ares 36 lunar equator 36 orbiter lander 36 duration spaceflight 36 spacesuits 36 matter antimatter annihilation 36 ice cream tubby 36 atomic lattice 36 Mars Opportunity rover 36 suborbital spacecraft 36 suborbital flight 36 aboard Skylab 36 Discovery undocked 36 Ron Garan 36 Konstantin Feoktistov 36 lego bricks 35 Flybar 35 hypervelocity 35 aboard Soyuz TMA 35 unpiloted 35 Apollo missions 35 orbital rendezvous 35 Zero Gravity 35 Space Shuttle Orbiter 35 subsurface scattering 35 LRO LCROSS 35 faraway planets 35 Bjarni Tryggvason 35 interplanetary missions 35 simulated weightlessness 35 ultraprecise 35 Bose Einstein condensate BEC 35 lunar missions 35 EZ Rocket 35 nanomesh 35 Stardust spacecraft 35 supercold 35 Curiosity rover 35 comet flyby 35 #/#-hour spacewalk [001] 34 weightless 34 massless 34 Yuri Shargin 34 Xerus 34 parachutes malfunctioned 34 astronautics 34 spaceflight 34 pressurized spacesuits 34 orbital module 34 X #A 34 simulating weightlessness 34 lunar surface 34 Shannon Lucid 34 crewed spacecraft 34 Manned Spacecraft Center 34 unpressurized 34 Squyres Cornell 34 Dr. Mae Jemison 34 retrorockets 34 spacecraft 34 Byron Lichtenberg 34 orbital spaceflight 34 exoskeletons 34 outerspace 34 repelling magnets 34 unmanned probes 34 sub orbital 34 FASTSAT 34 vertical takeoffs 34 Heidemarie M. 34 ISS Expedition 34 maritime subsurface 34 drogue parachute 34 exoskeletal 34 Bernoulli principle 34 orbited Earth 34 Orion spacecraft 34 Opportunity rovers 34 ammonia flakes 34 thick viscous 34 Earth orbit 34 gravities 34 comet chaser 34 Bernoulli Principle 34 rebreathing 34 Crawler Transporter 34 Space Shuttle 34 lightspeed 33 Virgin Galactic SpaceShipTwo 33 Northrop Grumman Weightless Flights 33 spatially coherent 33 MPLM 33 spaceward 33 Ballbot 33 Kiruna Sweden 33 telemetry instrumentation 33 Ares IX rocket 33 parabolic arcs 33 Martian terrain 33 astronautical 33 asteroid Eros 33 neutrally buoyant 33 parafoil 33 lunar landings 33 vomit comet 33 spacewoman 33 Spacewalkers Scott Parazynski 33 dimensional visualization 33 SUGAR Volt 33 commander Leroy Chiao 33 Mars rovers Opportunity 33 suborbital spaceflight 33 Wallops Island Va. 33 Nasa Mars Reconnaissance 33 radioisotope thermoelectric generator 33 SolarEagle 33 Shuttle docks 33 parabolic maneuvers 33 Simonetta Di Pipo 33 DEPTHX 33 strap ons 33 aeroshell 33 outer space 33 Nasa spacecraft 33 Cosmodrome 33 orbital 33 RoboSwift 33 orbital maneuvering 33 Satcher Jr. 33 orbital mechanics 33 airtight lid 33 ornithopter 33 invitees splashed 33 caulk gun 32 treadmill stationary bike 32 Dryden Flight Research 32 countdown dress rehearsal 32 deorbiting 32 autonomous rendezvous 32 Stretchy 32 Vomit Comet 32 Alexander Samokutyayev 32 aerobic anaerobic 32 Indoor Skydiving 32 Mylar 32 extravehicular 32 martian surface 32 Abigail Mae 32 dissected frog 32 spacesuit gloves 32 thermos bottle 32 Ares IX 32 Lt. Col. Yang Liwei 32 EPOXI mission 32 magnetic dipole 32 NASA Weightless Wonder 32 veteran spaceflyer 32 Stardust capsule 32 irregularly shaped asteroid 32 astronauts Jing Haipeng 32 liquidy 32 WK2 32 Psychological profiling 32 unpowered landing 32 lunar module Eagle 32 earthlike 32 hyperspace 32 Joel Sitz project 32 WhiteKnight Two 32 gimbaled 32 orbiting 32 ionized 32 Canada PW#A engines 32 instrument calibrations 31 Star Trek holodeck 31 spaceflights 31 3Dconnexion 3D mice 31 chemically bonded 31 bioelectric 31 urine recycler 31 Shuttle Discovery blasts 31 Apollo lunar 31 Nicollier 31 wick moisture 31 Saturn moons Titan 31 #/#-hour descent 31 Lunar Module 31 Russian crewmate Salizhan 31 parabolic trajectory 31 circular orbits 31 Shenzhou VII spacecraft 31 icy moons 31 Mars landers 31 light refracting 31 etheric 31 Koichi Wakata 31 protruding filler 31 Gene Cernan 31 Skylab 31 zero gravity 31 Spacewalker 31 teleportation 31 juggling clowning 31 Meridiani plains 31 ionized molecules 31 cosmic radiation 31 Lunar Excursion Module 31 Jing Haipeng 31 pressurized rovers 31 superhydrophobic 31 Novespace 31 Shuttle Endeavor 31 vertical stabilizers 31 mylar 31 SpaceLoft XL rocket 31 spherical shapes 31 thrusters 31 Aerostats 31 Star Trek Holodeck 31 NASA MESSENGER spacecraft 31 primordial soup 31 spaceships 31 Esrange 31 gingerly unstrapping himself 31 postflight 31 Russian crewmate Yuri 31 robotic Canadarm 31 Soviet cosmonauts 31 HB SIA 31 piconewtons 30 Venusian atmosphere 30 diamagnetic 30 quadrocopter 30 Orbital Outfitters 30 Gossamer Condor 30 twin fuselages 30 Wingsuit 30 Dragon capsule 30 Shuttle Landing 30 aerobraking 30 weightlessness 30 lunar module pilot 30 sidestick 30 photoreal 30 orbiter Atlantis 30 SpaceShip One 30 laminar 30 motorized gliders 30 Russian cosmonauts Andrei Borisenko 30 propulsion 30 Stratellite 30 cosmonaut Yuri Gagarin 30 Martian orbit 30 Aeroscraft 30 oblate spheroid 30 Karen Nyberg 30 slimy smelly layer 30 interplanetary 30 Peter H. Diamandis 30 Orbiter 30 asteroid Itokawa 30 spacetime 30 dirigibles 30 lotus leaf 30 SpaceShip Two 30 Chiaki Mukai 30 Gravitron 30 lunar landing 30 prelaunch preparations 30 thruster firings 30 Vassilis Angelopoulos 30 ferry SpaceShipTwo 30 spaceflight participant 29 spaceship 29 tipped precariously 29 animatronic creatures 29 Kaleri 29 lavender scent 29 George Zamka 29 Space Elevator 29 simulates weightlessness 29 parabolas 29 Canadarms 29 MESSENGER spacecraft 29 Shuttle Launch Experience 29 repulsor 29 bi axial 29 interstellar 29 Martian arctic 29 Saturn moon Mimas 29 macroscale 29 flapless 29 commander Zhai Zhigang 29 Pete Siebold 29 Magnetic levitation 29 suborbital 29 NEEMO 29 kinesis 29 supersonically 29 wave particle duality 29 André Borschberg 29 colonize Mars 29 Valentina Tereshkova 29 parachute deploys 29 transonic 29 station Quest airlock 29 MySims SkyHeroes 29 bipedal locomotion 29 terraforming Mars 29 gradiometer 29 whirlpool jets 29 shuttle orbiter 29 elongated orbit 29 taikonaut 29 spherical 29 geosynchronous orbit 29 Deep Impact flyby spacecraft 29 tumbleweed rover 29 Virgin Galactic WhiteKnightTwo 29 Peter Diamandis 29 Kibo robotic arm 29 holodeck 28 ballistic trajectory 28 haptic interface 28 Rutan SpaceShipOne 28 roadable aircraft 28 Jeff Greason 28 Solar Impulse HB SIA 28 subatomic 28 starshade 28 unpressurised 28 Rick Searfoss 28 uncluttered dashboard 28 OSTM Jason 2 28 Brazilian Marcos Pontes 28 MARSIS instrument 28 UP Aerospace 28 Tinkertoy 28 visco elastic foam 28 orbit 28 commander George Zamka 28 moonwalkers 28 Saturn moon 28 interplanetary voyage 28 Fincke radioed 28 supersonic 28 wormholes 28 Martian plains 28 arid Kazakh steppe 28 LEGO bricks 28 Mars rovers Spirit 28 robot locomotion 28 subsonic 28 NASA twin rovers 28 Rosetta spacecraft 28 astronaut Rex Walheim 28 swim bladders 28 paramecia 28 lifting barbell 28 Soyuz rocket 28 VMS Eve 27 SpaceX Dragon capsule 27 dexterous robots 27 Pilot George Zamka 27 graphene sheet 27 noodley 27 centrifugal force 27 VTOL 27 mothership WhiteKnightTwo 27 astronaut Piers Sellers 27 ESA astronaut Christer 27 robotic explorer 27 pneumatic catapult 27 #kt #km h 27 hypobaric chamber 27 shuttlecock shaped capsule 27 Alexei Leonov 27 protruding strips 27 aquanaut 27 International Space Station 27 Zero Gravity Corporation 27 Mamoru Mohri 27 spacemen 27 spaceliner 27 Dr Ehrsson 27 ISS robotic arm 27 galvanic vestibular stimulation 27 Susan Kilrain 27 jetpack 27 Necker Nymph 27 Twittering invitees 27 fiery reentry 27 aqualung 27 seemingly weightless 27 Soviet cosmonaut Yuri Gagarin 27 Yum Dingers 27 Andre Borschberg 27 Maglev trains 27 unpowered 27 eliptical 27 Stratellite tm 27 shuttle Atlantis astronauts 27 Robonaut 27 Sirangelo 27 ballistic parachute 27 sculpturally 27 ESA Huygens probe 27 SCUBA gear 27 Samokutyaev 27 Mojave Spaceport 27 Bosu ball 27 airfoils 27 hoola hoops 27 Inhale deeply 27 Nikolai Budarin 27 Bob Thirsk 26 lunar module descent 26 orbiter 26 Watsu 26 balsa wood 26 graspable 26 planktonic 26 bulky spacesuits 26 elastic cords 26 simulate 26 laminar flow 26 Zero Gravity Corp. 26 Kazakhstan steppes 26 Gossamer Penguin flew 26 sideslip 26 Soyuz landings 26 insectlike 26 wingsuit 26 Russian Mikhail Tyurin 26 suit waterproof coveralls 26 weblike 26 relativistic 26 bungees 26 exoskeleton 26 Kenneth Ham 26 parabola shaped 26 Canadian Julie Payette 26 cosmonauts 26 amazingly lifelike 26 commercial spaceline 26 stubby wings 26 Haise 26 pogo sticks 26 astral projection 25 Harry Potter invisibility cloak 25 Dominic Gorie 25 VSS Enterprise 25 station Canadarm2 robotic 25 outercourse 25 starboard truss 25 whirling centrifuge 25 twin rover Spirit 25 rebreather 25 Parrot AR Drone 25 Dryden Aircraft 25 parachutes 25 Jukari Fit 25 NASA rovers 25 Shuttle astronauts 25 stretchy 25 spacey 25 astronaut 25 jet propulsion 25 robotic rover Spirit 25 Commander Pam Melroy 25 Astronaut Sunita Williams 25 kinesthetically 25 SpaceShipOne 25 simulates 25 robotic 25 suborbital trajectory 25 Airkix 25 narcosis 25 jerky movements 25 spacefaring 25 elastic cord 25 Voyager spacecraft 25 stationary lander 25 contraptions 24 haptic device 24 outer planets 24 gimbals 24 Foale 24 levitation 24 space shuttle 24 nipple tassles 24 gyrocopters 24 satiny smooth 24 planetarium dome 24 Earth asteroid Itokawa 24 perform microsurgery 24 planet gravitational tug 24 simulating 24 cosmonaut 24 Jerrie Cobb 24 watercolor washes 24 NASA vomit comet 24 Slinkies 24 Bill Gerstenmaier associate 24 payload bay 24 sensuous curves 24 starscape 24 SCUBA diving 24 parabolic 24 Barry Butch Wilmore 24 elliptical 24 floaty 24 weightlessly 24 aerial silks 24 dust mote 23 spins spirals 23 Commander Rick Sturckow 23 plasticy 23 SpaceShipTwo 23 Flight Engineer Suni 23 Soyuz capsule 23 ZERO G 23 astronauts 23 orb 23 Yves Rossy 23 veteran spacewalker 23 cumulus clouds 23 gravity defying tricks 23 Astronaut Danny Olivas 23 Huygens probe 23 Nasa astronaut 23 hydrodynamic 23 UTTR 23 martian landscape 23 inter planetary 23 futuristic 23 squashy 23 robotic arm 23 Space Shuttle Discovery 23 inchworm 23 pushups situps 23 Fulmor 23 engineer Sandra Magnus 23 float weightlessly 23 Marc Rayman 23 twinkling stars 23 absentminded professor 23 cosmos 22 Telenoid 22 toned thighs 22 Space Shuttle Atlantis 22 sailplanes 22 pressurized cabins 22 MZ 3A 22 biomorphic shapes 22 bathysphere 22 spacewalks 22 inert 22 Aircruise 22 microscopic spores 22 Space Shuttle Endeavor 22 ripply 22 airspeeds 22 Mobius strip 22 pneumatically 22 Richard Branson Virgin Galactic 22 kinesthetic 22 gravitational 22 ancient lakebed awash 22 AntiGravity 22 spherical objects 22 spin webs 22 moonlike 22 Astronaut Gregory Chamitoff 22 humanlike 22 soft pillowy 22 Space shuttle Atlantis 22 whiplike 22 trapezing 22 levitating 22 formless 22 orbiters Mars Odyssey 22 tickling sensation 22 Manyapu 21 Schubertian 21 director Annette Hasbrook 21 acrobatic maneuvers 21 NASA Mars rover 21 shuttle underbelly 21 sponges absorbing 21 Mission SPACE 21 womblike 21 footwork spins 21 illusionistic 21 vibrating 21 airless 21 water striders 21 Wakata 21 Monitoring System ISMS 21 defying gravity 21 Jetliners wingtips touched 21 Moshner 21 floating weightless 21 cashier Ashley Woloszyn 21 ooh ahh 21 delta winged 21 Branson Virgin Galactic 21 treadles 21 unstow 21 manta ray 21 aquanauts 21 asanas poses 21 gimbal 21 double bladed paddle 21 tulles 21 Charles Hobaugh 21 gliders 20 plotless 20 diaphanous 20 frictionless 20 downstroke 20 badminton shuttlecock 20 director Holly Ridings 20 Spaceship Earth 20 omni directional 20 Stefanyshyn Piper 20 glider 20 cosmonaut Fyodor Yurchikhin 20 bungee chords 20 graceful arcs 20 tippets 20 LocoRocos 20 polymorphous perversity 20 Vitaly Davydov deputy 20 technologically mediated 20 jiggle 20 airship 20 aliveness 20 Borschberg 20 levitate 20 daddy longlegs 20 ethereality 20 gossamer 20 Hale Bopp comet 20 cork screw 19 jiggly 19 basilar membrane 19 jetés 19 springy 19 earthbound 19 elongates 19 puffy clouds 19 gravity defying 19 skydive 19 spacewalking 19 orgasmic 19 eggbeater 19 gyroscopic 19 pulse quicken 19 earthward 19 floating weightlessly 19 shuttle missions 19 defies gravity 19 translucently 19 tingly sensation 19 gamelike 19 Kenneth Bowersox 19 Rebecca Bresnik understandably 19 tactile sensation 19 tingly 19 rocket SpaceShipTwo 19 autorotation 19 trapezes 19 glowing orb 19 untoned 19 luna moth 19 bungee rope 19 Cape Canaveral Fla. 19 sailplane 18 haptic 18 Biplane 18 AR.Drone 18 flailing limbs 18 astral 18 Foro Italico gusty winds 18 indoor skydiving 18 orbiting complex 18 isometric contractions 18 earthwards 18 spine tingle 18 multicolored balloons 18 SkyScreamer 18 tactile feedback 18 spinning gyroscope 18 Hackensack NJ Schirra 18 pure exhilaration 18 Svetlana Savitskaya 18 levitated 18 gossamer wings 18 ballon 18 Eileen Collins 18 Commander Eileen 17 translucent 17 watery depths 17 bungie cords 17 pointe shoe 17 William Gerstenmaier NASA 17 astral plane 17 ethereal 17 en pointe 17 glassy 17 limbs flailing 17 Roller coasters 17 limberness 17 Cuzzupoli 17 heli deck 17 defy gravity 17 ballet barre 17 Gorie 17 Gs 17 cigar minnow 16 levitates 16 unridable 16 creaseless 16 Kazakh steppe 16 bungee 16 vibrate 16 unbound 16 elasticized 16 ripcord 16 sequined tights 16 sweatiness 16 whirlybird 16 Helios Airways Flight ZU# 16 untwist 16 effortlessly glide 16 sensory deprivation tank 16 bungee cords 16 liftoffs 16 lipless 16 tactility 16 weedless 16 sterile 15 tethered balloon 15 elastic 15 otherworldly 15 airsick 15 hummingbird wings 15 swanlike 15 tandem skydiving 15 magnificent desolation 15 untethered 15 evanescent 15 knackering 15 ethereally 14 silken threads 14 rubbery 14 hang glider 14 skydiving bungee jumping 14 glide 14 raven tresses 14 petrifying 14 sensually 14 sways gently 14 shuttle underside 14 un tethered 14 awkard 14 transportive 14 lily pad 14 wild blue yonder 13 claustrophic 13 dreamlike 13 dirigible 13 hypnotic 13 unearthly 13 deathlike 13 overrotated 13 dizzy nauseated 13 nothingness 13 terra firma 13 midair 13 trapeze 13 whisp 13 bodily contortions 12 pliés 12 tactile 12 sticklike 12 weightless Hawking 12 lightness 11 thermal updrafts 11 underwater 11 seasick 11 claustrophobic 11 shuttle Atlantis undocked 11 squishy 11 altitude airspeed 10 glide effortlessly 10 gliding 9 motionless 9 unself conscious 8 unnatural 8 tethered 7 effortless 5 vertiginous 4 immobile 4 blissful