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(Click for frequent words.) 59 please visit www.theESA.com 59 exponentially smoothed 57 Space Agency 57 SMOS 57 Franco Bonacina 57 spokesman Franco Bonacina 57 ESTEC 56 ESA CNES 56 Huygens mission 56 Simonetta Di Pippo ESA 55 Earth Observation Programmes 55 EFTA Surveillance Authority 55 EbS 55 orbiting gamma ray 54 CNES 53 ESOC 53 COSPAR 53 Simonetta Di Pippo 53 BepiColombo 53 Emergency Stand Alone 53 Eumetsat 53 ESA Rosetta 53 ESTRACK 53 Volker Liebig 53 GMES 52 scientist Bernard Foing 52 Erythropoiesis Stimulating Agent 52 Eurobot 52 Rosetta comet chaser 52 ExoMars mission 52 Cosmic Vision 52 SCISAT 52 Thales Alenia Space 51 Dordain 51 Earth Observation 51 Gaele Winters 51 Herschel Planck 51 agency CNES 51 planetary Transits 51 Cryosat 51 ESA ESOC 51 EUMETSAT 51 ATV Johannes Kepler 51 Astrium 51 Jean Jacques Dordain 50 GOCE 50 ESA CryoSat 50 ESRIN 50 ESA Planck 50 NASA 50 SAR Lupe 50 Planck satellite 50 Jules Verne ATV 50 Envisat satellite 50 ATV Jules Verne 50 NASAs 50 Redu Belgium 50 Eurockot 50 ESA Cluster 50 GOSAT 49 ASPERA 49 YES2 49 LISA Pathfinder 49 Cassini Huygens 49 Rosetta spacecraft 49 COSMO SkyMed 49 Proba 2 49 SRON 49 Solar Orbiter 49 Daniel Sacotte 49 Medspiration 49 Human Spaceflight 49 ESA ESTEC 49 ESA Earth Observation 49 Highly Adaptable Satellite 49 David Southwood ESA 49 ExoMars rover 49 Galileo satellites 49 ESA Astronaut 49 National d' Etudes 49 Ocean Salinity 49 Helios 2B 49 Alphabus 48 ESMD 48 Ariane launchers 48 Heiner Klinkrad 48 Convection Rotation 48 JAXA 48 Vega launcher 48 Galileo Joint Undertaking 48 AMSAT 48 GIOVE B 48 MetOp 48 ESA Integral 48 NASA Goddard 48 Jupiter Icy Moons Orbiter 48 Payload Operations 48 TanDEM X 48 Huygens lander 48 AMASE 48 astronauts Hans Schlegel 48 Noordwijk Netherlands 48 Earth Observation EO 48 Thales Alenia 48 LAGEOS 48 Foing 48 Spacecraft Operations 48 firm Trimaran Capital 48 ExoMars 48 Metop 47 XMM Newton X ray 47 EADS Astrium 47 Spatiales 47 PRACE 47 ESA Herschel 47 Observatory STEREO 47 Robotic Exploration 47 Giove B 47 Ariane launcher 47 Human Spaceflight Microgravity 47 IFREMER 47 planetary missions 47 Telespazio 47 Erythropoiesis Stimulating Agents 47 VIRTIS 47 NASA Landsat 47 LADEE 47 Orbiting Carbon Observatory OCO 47 TerraSAR X 47 Bernhard von Weyhe 47 JDEM 47 Decadal Survey 47 ESA SMART 47 Ocean Salinity SMOS 47 SSETI Express 47 Lunar Reconnaissance Orbiter LRO 47 FP6 47 Automated Transfer Vehicle 47 BepiColombo mission 47 ITEA 47 Rosaviakosmos 46 Bonacina 46 Huygens 46 Joint Undertaking 46 Relations Observatory STEREO 46 Hakan Svedhem 46 Kliper 46 Kepler Mission 46 GLAST 46 Southern Observatory ESO 46 twin STEREO spacecraft 46 Gerhard Schwehm 46 7th Framework Programme 46 Alcatel Alenia 46 ESRIN ESA 46 ENVISAT 46 Review FRR 46 Mars Climate Sounder 46 Infrared Astronomy SOFIA 46 Ariane 5 46 CALIPSO 46 Spatiales CNES 46 HRSC 46 Mission TRMM 46 Alcatel Alenia Space 46 Planck spacecraft 46 Smos 46 CryoSat satellite 46 Ulysses spacecraft 46 Antenna LISA 46 COROT 46 NASA THEMIS 46 Environmental Satellite POES 46 EUROCONTROL 46 ADM Aeolus 46 GOCE satellite 46 Astrium Satellites 46 JWST 46 Payloads 46 Space Telescope GLAST 46 NASA STEREO 46 OSIRIS Rex 46 MEPAG 46 STScI 46 SRON Netherlands Institute 46 Foton M2 46 Oceansat 2 46 ESA SMOS 46 NASA Stratospheric Observatory 45 IATTC 45 NASA JPL 45 Tropical Rainfall Measuring 45 Arianespace 45 Mars# 45 Landsat Data 45 ARTEMIS 45 Orbiter 45 LEOP 45 SMOS mission 45 GMES Space 45 Meteorological Satellites 45 Studies CNES 45 polar orbiting 45 Orbiter spacecraft 45 CryoSat 45 Planetary Transits 45 Commercial Spaceflight Federation 45 STIS 45 CryoSat mission 45 meteorological satellites 45 Foton M3 45 probe Huygens 45 NROL 45 ESA astronaut 45 Euromap 45 Pecresse 45 De Winne 45 Yannick d' Escatha 45 Agency JAXA 45 NASA WMAP 45 LASP 45 Jupiter Icy Moons 45 ISS 45 ESA GOCE 45 NuSTAR 45 JHU APL 45 e GEOS 45 Paolo Nespoli 45 agency Roskosmos 44 Heliophysics 44 Comet Churyumov Gerasimenko 44 SIRAL 44 ESA Envisat 44 6th Framework Programme 44 erythropoiesis stimulating agent 44 Starsem 44 Europa Orbiter 44 spacecraft 44 Paulo Nespoli 44 Isro 44 JIMO 44 NASA Exobiology 44 Robotic Lunar Exploration 44 GALILEO 44 SIRTF 44 Galileo satellite 44 Planetary Society 44 Terrestrial Planet Finder 44 EPOCh 44 EPOXI mission 44 Proba 44 SOHO spacecraft 44 ESA Mars 44 Doug Lowenstein 44 Volker Liebig ESA 44 Astrium GmbH 44 Planck telescope 44 GLONASS M 44 SMOS satellite 44 NLSI 44 orbital rendezvous 44 comet chaser 44 ISRO 44 Jet Propulsion Laboratory JPL 44 Vehicle ATV 44 Roberto Vittori 44 Oceansat 44 Magnetospheric 44 Space Interferometry Mission 44 Environmentally Sensitive Areas 44 Rosetta orbiter 44 WebTAS 44 Mars lander 44 Total Ozone Mapping 44 Seventh Framework Programme 44 Huygens Probe 44 FORMOSAT 44 Moon Mineralogy Mapper M3 44 Frascati Italy 44 Kazakhstan Baikonur Cosmodrome 44 Lunar Exploration 44 SPICAM 44 Aquarius SAC 44 INAF IASF 44 Orbiter LRO 44 Polarstern 44 Alphasat 44 LCROSS Observation Campaign 44 Launch Vehicle 44 Roskosmos 44 OSIRIS 44 geosynchronous satellite 44 Kiruna Sweden 44 Climate Experiment GRACE 44 RADARSAT 2 44 Soil Moisture 44 Alenia Spazio 44 Kayser Threde 44 SMOS Soil Moisture 44 astrometric 44 STS 44 RLEP 44 Mars Reconnaissance Orbiter MRO 44 CANEUS 44 Nasa 44 GPS IIR M 43 Solar TErrestrial RElations Observatory 43 NanoRacks 43 Foundation ESF 43 André Kuipers 43 Solar Terrestrial Relations 43 NASA Solar Terrestrial 43 Eurely 43 Venus Climate Orbiter 43 Solar Sail 43 uncrewed 43 Orbiter MRO 43 Cosmo SkyMed 43 THEMIS mission 43 SSP FRR 43 EarthCARE 43 Security GMES 43 Lunar Outpost 43 GIOVE 43 SESAR 43 PPARC 43 Framework Programmes 43 Jean Pierre Bibring 43 Cryosat satellite 43 spokesman Igor Panarin 43 Phobos Grunt 43 LSAM 43 X ray observatory XMM 43 Planetary Fourier Spectrometer PFS 43 exponentially smoothed moving 43 Astronaut Corps 43 INTERREG 43 orbiter Cassini 43 National Polar Orbiting 43 orbiting observatories 43 Near Infrared Camera 43 Cloud Aerosol Lidar 43 Astro E2 43 weather satellite TIROS 43 DEISA 43 Orbiting Carbon Observatory 43 GALEX 43 Daniel Sacotte ESA 43 NOAA GOES 43 LIGO Scientific Collaboration 43 polarimetric 43 WISE spacecraft 43 SCIAMACHY 43 Cassini 43 ESA ASI 43 Troposphere 43 Infoterra GmbH 43 Japanese Aerospace Exploration 43 CEV 43 Extra Vehicular Activity 43 COROT satellite 43 INTEGRAL 43 DART spacecraft 43 Orbital Debris 43 Delfi C3 43 Commissioner Philippe Busquin 43 Photonics# 43 Ariane rocket 43 LDCM 43 NASA MESSENGER 43 SARSAT 43 Léopold Eyharts 43 SIM PlanetQuest 43 Ocean Surface Topography 43 IPEV 43 CHIPSat 43 enters lunar orbit 43 Interior Laboratory GRAIL 43 Potočnik 43 EADS Astrium GmbH 43 LRO LCROSS 43 Marcello Coradini 43 SMEX 43 CCSDS 43 Planck observatory 43 RADARSAT 43 Envisat satellites 43 GOES O 43 O OREOS 43 ARCTUS 43 ESA ERS 43 ESA astronaut Christer 43 Express orbiter 43 Continuity Mission LDCM 43 pressurized module 43 Geostationary 43 Ocean Observing 43 Block 5D 43 C NOFS 43 NASA Kepler 43 Sixth Framework Programme 42 IGBP 42 Ralabate 42 Rockot 42 Sevastyanov 42 Oberpfaffenhofen 42 Launch Abort System 42 JIMO mission 42 DG TREN 42 CNSA 42 JPL 42 Mars Surveyor 42 orbital insertion 42 Stardust NExT mission 42 Servicing Mission 42 Satellites GOES 42 ESA XMM Newton 42 Ice Coring 42 Soyuz Fregat launcher 42 experimental payloads 42 FIZ Karlsruhe 42 GPS IIF 42 Envisat 42 NASA Orbiting Carbon 42 STEREO spacecraft 42 International Geosphere Biosphere 42 International Space Station 42 orbital maneuvers 42 Planetary Protection 42 Laser Interferometer Space 42 Klinkrad 42 OHB System 42 Deep Impact comet 42 Neutral Mass Spectrometer 42 XMM Newton observatory 42 DragonLab 42 Innovative Partnerships Program 42 MDRS 42 CIXS 42 Astrophysical Research 42 NASA Authorization 42 Interorbital Systems 42 Polar Operational 42 Hubble Space Telescope HST 42 MetOp satellite 42 Solar Dynamics Observatory 42 orbiter 42 decadal survey 42 SSTL 42 Earth orbiting satellites 42 Bepi Colombo 42 NASA GLAST 42 Carl Marchetto 42 Bob Ess 42 Francois Auque 42 PSLV C8 42 LRO spacecraft 42 SPIRE instrument 42 Chandrayan 42 interplanetary spacecraft 42 François Auque 42 Lunar Prospector 42 Stratospheric Observatory 42 Credits ESA 42 INSAT satellites 42 Hubble Space telescope 42 Earth Observations GEO 42 NOAA 42 ROCSAT 2 42 MPLM 42 AMSAT NA 42 GeoForschungsZentrum Potsdam 42 Atlantis Undocks From 42 Oberpfaffenhofen Germany 42 CBERS 42 NOAO 42 INMS 42 John Gedmark 42 Orion LAS 42 Geosynchronous 42 Relative Navigation 42 Galileo constellation 42 SES Astra 42 nanosatellite 42 Cassini Huygens spacecraft 42 Astra 3B 42 SeaWiFS 42 Huygens probe 42 AEHF 42 D CIXS 42 Meteorological Satellite 42 Global Precipitation Measurement 42 Automated Transfer Vehicles 42 Cospas Sarsat 42 XMM Newton 42 Ares Orion 42 Alessandro Morbidelli 42 FP7 42 Helmholtz Zentrum Berlin 42 ion propulsion 42 GRAIL 42 EGRET 42 planetary exploration 42 NASA Jet Propulsion Laboratory 42 SuitSat 42 Spacelab 41 windshield wiper maneuver 41 Jean Yves Le Gall 41 countdown dress rehearsal 41 Air Force Evolved Expendable 41 Lunar Orbiter 41 Jet Propulsion Laboratory 41 Mike Cerneck 41 GSTB V2 41 Le Gall 41 BEinGRID 41 DMCii 41 ship Polarstern 41 Robotic Arm 41 EPER 41 QuikSCAT 41 journal Meteoritics 41 GPS Block IIF 41 Orion Ares 41 DIXI 41 Berinstain 41 NASA LaRC 41 Cosmodrome 41 Esrange Space Center 41 GeneSat 1 41 Mirelson 41 Lars Prahm 41 Satellite GOSAT 41 Busquin 41 Agenzia Spaziale Italiana 41 NASA Innovative Partnerships 41 Situ Resource 41 mission Chandrayan 41 Nespoli 41 Molecular Biology Organization EMBO 41 EPSC 41 extravehicular activities 41 Megha Tropiques 41 Esrange 41 Simonetta Di Pipo 41 NPOESS 41 EUTELSAT 41 Fucino 41 infrared observatory 41 Astrobiology Institute 41 http:/saturn.jpl.nasa.gov 41 Guiana Space 41 NASA Cosmic Background 41 Professor Pillinger 41 NASA twin STEREO 41 NASRDA 41 ITER 41 Terrestrial Planet Finder TPF 41 XMM Newton satellite 41 Mars Pathfinder 41 COSPAS 41 DMSP F# 41 OHB System AG 41 NASA GSFC 41 AMIE camera 41 e VLBI 41 Orbit Validation 41 OSIRIS REx 41 ScanEx 41 TerraSAR X satellite 41 Galilean satellites 41 Research Commissioner Janez 41 William Readdy NASA 41 EADS SPACE Transportation 41 European Geostationary Navigation 41 situ measurements 41 Mercury flyby 41 ESA Proba 41 Neptec 41 Philae lander 41 Sirangelo 41 Nikolai Moiseyev 41 Ed Weiler NASA 41 BLG #Lb 41 OHB Technology AG 41 ISS resupply 41 Hubble Servicing 41 NASA Kepler telescope 41 INIDEP 41 WFC3 41 propulsion subsystem 41 Pegasus XL 41 Pluto Kuiper Belt 41 altimetry 41 Cassini Equinox 41 GeneSat 41 Giovanni Picardi 41 Human Epigenome Project 41 Ångström 41 AEPOC 41 ICESat 41 Institute SwRI 41 #:# CEST 41 IceBridge 41 IODP 41 Mars Odyssey 41 MARSEC XL 41 Mars CRISM 41 Louis Stodieck 41 JPL Caltech 41 Pilot George Zamka 41 Infrared Pathfinder Satellite 41 Fifth Framework Programme 41 PRCB 41 AATSR 41 operator Eutelsat 41 Gamma ray Large 41 Krimigis 41 BMBF 41 Churyumov Gerasimenko 41 ICO G1 satellite 41 W3B 41 Astronaut Julie Payette 41 CX OLEV 41 Antonia Mochan 41 Clervoy 41 ultraviolet spectrograph 41 NSPO 41 UKIRT 41 Sustainable Fisheries 41 Nuclear Spectroscopic Telescope Array 41 SM4 41 THEMIS 41 NoE 41 shuttle Endeavour STS 41 Eutelsat Communications 41 Radarsat 41 Shallow Subsurface Radar 41 Egnos 41 Sample Return 41 dexterous robot 41 COMSATBw 41 SenterNovem 41 Synthetic Aperture Radar SAR 41 Director Charles Elachi 41 aboard ESA Envisat 41 Garching Germany 41 Observatory SDO 41 Eutelsat KA SAT 41 Hubert Curien 41 VLBI 41 NPOESS Preparatory Project 41 Ozone Monitoring 41 Skynet 5C 40 Jules Verne Automated Transfer 40 Foton M3 mission 40 NEAFC 40 Earth Observations 40 Hubble servicing 40 Orbital Express 40 Intersputnik 40 Fermi Telescope 40 NASA Astrobiology 40 Nasa Jet Propulsion 40 TIROS 40 Benoit Marcotte 40 RSC Energia 40 IBMP 40 GÉANT 40 OHB 40 TDRSS 40 Wide Angle Search 40 ASTRON 40 Atlas V 40 Leopold Eyharts 40 Faint Object 40 Astrolab 40 Romain Bausch President 40 DEIMOS 40 EICTA 40 STP S# 40 DigitalGlobe WorldView 40 Innovative Partnerships 40 CORDIS News 40 KOMPSAT 40 NEEMO 40 visit http:/saturn.jpl.nasa.gov 40 laser altimeter 40 Nanosat 40 Infoterra 40 Deutsche Forschungsgemeinschaft DFG 40 JPEO JTRS 40 geostationary satellite 40 Birds Directive 40 CoML 40 SORCE 40 NASA Educator Astronaut 40 Turksat 4A 40 Alcatel Thales 40 Landsat 40 ESAS 40 Solid Liquid Mixtures 40 Galileo Avionica 40 NICMOS observations 40 satellites orbiting Earth 40 ST5 40 VSDA 40 Johannes Kepler 40 AGCOM 40 DLR 40 TsUP 40 Kourou 40 UK DMC2 40 Anik F3 40 Launch Scrubbed 40 Ariane 5G 40 HARPS N 40 NASA LCROSS 40 Science Popularisation Association 40 Hylas 40 EWEA 40 STSS Demonstration 40 orbital observatory 40 Shallow Radar instrument 40 onboard Chandrayaan 40 Optical Gravitational Lensing Experiment 40 CoRoT satellite 40 STSS Demo 40 Alternative Methods ECVAM 40 von Weyhe 40 Express AM# 40 AeroGRID 40 Reshetnev 40 Meteosat 40 Cubesat 40 PSLV C# 40 eTEN 40 NASA Stardust NExT 40 geosynchronous satellites 40 Sasselov 40 Forschungszentrum Jülich 40 Yuri Koptev 40 Foton spacecraft 40 KA SAT 40 FWS 40 Instrument OMI 40 CubeSat 40 Cassini Huygens Mission 40 ESA Envisat satellite 40 Suspension Adjustment 40 PSLV C 40 asteroid Steins 40 astroparticle physics 40 EEA 40 ALOS 40 Mars orbiter 40 NASA Far Ultraviolet 40 ISS Expedition 40 Infrared Astronomy 40 interplanetary missions 40 Mars Polar Lander 40 Eyharts 40 Carlo Gavazzi Space 40 Gamma ray burst 40 rocky extrasolar planet 40 Landsat Data Continuity 40 FASTSAT 40 LEO satellites 40 MTSAT 40 Gravity Probe B 40 HIAPER 40 nEUROn 40 Mars Atmosphere 40 C1XS 40 Union IAU 40 ESO VLT 40 spacecrafts 40 Arianespace Ariane 5 40 ARISS 40 International Astronautical Federation 40 Johann Dietrich Worner 40 Deutsches Zentrum für Luft 40 OCCAR 40 CCDev 40 Centre BNSC 40 don spacesuits 40 agency Rosaviakosmos 40 W2M satellite 40 Ares I. 40 Envisat ASAR 40 DMSP F 40 EPHA 40 Alexander Samokutyaev 40 Commissioner Janez Potocnik 40 THEMIS satellites 40 GOES N 40 Diazepam pharmacy 40 MErcury Surface Space ENvironment 40 RPWS 40 Shuttle Radar Topography 40 Observatoire de Paris 40 Climate Experiment 40 Titan flybys 40 Exploration Vehicle 40 GPS 2R 40 ECVAM 40 Janez Potocnik 40 Observing System 40 NASA GeneSat 1 40 Tajani 40 Earth Observation satellites 40 IXO 40 Hinode spacecraft 40 EPOXI 40 Suborbital 40 Mars Orbiter 40 NASA ICESat 40 COM DEV 40 unstowed 40 RapidEye 40 GLONASS constellation 40 Ricoh MFP 40 NMFS 40 Roscosmos 40 German SAR Lupe 40 CAIB recommendations 40 Spaceguard Survey 40 Landsat satellites 40 ESA Huygens 40 Interreg 40 Lunar Surface 40 ESOA 40 Galileo 40 KazSat 40 Nasa Ames 40 Russian Rokot booster 40 WGS Block 39 human spaceflight 39 Remote sensing 39 Huygens descent 39 Manned Space 39 Goddard Space Flight 39 UKE 39 ESO astronomer 39 Interplanetary Internet 39 NASA MSFC 39 orbiting observatory 39 Orion Launch Abort 39 Andrea Accomazzo 39 NARAC 39 Commercial Reusable Suborbital 39 http:/www.nasa.gov/cassini 39 SpaceX Dragon 39 spectroscopic observations 39 Multi Purpose Logistics 39 gamma ray observatory 39 CoRoT 39 Environment Commissioner Stavros 39 STEREO 39 Origins Spectral Interpretation 39 EGNOS 39 Specialist Greg Chamitoff 39 Cosmic Dust Analyzer 39 AMPERE 39 Yuri Lonchakov 39 specialists Scott Parazynski 39 JTIs 39 Competence Centres 39 SSRMS Space Station 39 XFEL 39 Space Telescope 39 Full Operational Capability 39 INREV 39 NPO Lavochkin 39 Landsat satellite 39 Catherine Cesarsky 39 Cosmic Background Explorer 39 CBERS 2B 39 Progress resupply 39 COPUOS 39 Calar Alto 39 Jet Propulsion Lab 39 SIMDAT 39 Khrunichev Space Centre 39 OHB Technology 39 Hyperspectral Imager 39 Technology Centre ESTEC 39 Resourcesat 39 QZSS 39 Iter 39 Kourou French Guiana 39 EPFL 39 Space Shuttle Endeavor 39 IBEX spacecraft 39 Earth Observation Satellites 39 NASA Deep Impact 39 Japan Aerospace Exploration 39 NASA Headquarters 39 Achilleas Mitsos 39 Earth Observation System 39 erythropoietin receptor 39 momagri 39 Charles Elachi 39 GLAST spacecraft 39 Freshfel 39 EVGN 39 Educator Astronaut 39 orbiter lander 39 CIRS 39 Nanosatellite 39 PSLV C9 39 AMSR E 39 CubeSats 39 Kopernikus 39 OrbView 39 MPIfR 39 Expendable Launch Vehicle 39 geosynchronous satellite launch 39 Commercial Resupply Services 39 Cefic 39 EGBA 39 orbital mechanics 39 HELCOM 39 Discovery STS 39 AERONET 39 Council PPARC 39 lunar landers 39 Fuglesang 39 deorbiting 39 journal Acta Astronautica 39 Glonass M 39 Shepherding Spacecraft 39 Astrophysical Institute 39 Anyamba 39 tagup 39 Hubble orbits 39 ITER International Thermonuclear 39 Optical Spectroscopic 39 Orion Crew 39 RapidEye AG 39 Minotaur rocket 39 Kibo JPM JEM Pressurized 39 Extremely Large Telescope 39 Fermi Gamma ray 39 Alain Berinstain 39 EDCTP 39 ILS Proton 39 BMC2 39 Marsis 39 CSIP 39 Sumbandila 39 Pluto Charon 39 NRENs 39 EUSI 39 Roddam Narasimha 39 ENEA 39 Slovenian Presidency 39 ESSP 39 Mössbauer 39 P/# A2 39 de Calcul 39 geosynchronous 39 Spaceport 39 Readiness Review 39 Astrium Eurostar 39 APXS 39 ArcticNet 39 Hubble 39 Space Physics 39 High Resolution Imaging 39 ESA Hubble 39 HIFI 39 comet #P/Churyumov-Gerasimenko 39 Plesetsk 39 Evolved Expendable Launch Vehicle 39 ESFRI 39 Titan flyby 39 Envisat Advanced Synthetic Aperture 39 Tod Strohmayer 39 Atlas IIAS 39 Soyuz #S 39 UNCCD 39 JPSS 39 Planck 39 EUROCORES 39 ARISSat 39 Greenhouse Gases Observing 39 PSLV C7 39 Gravity Recovery 39 Helmholtz Zentrum München 39 Mir Space Station 39 INSAT 3A 39 Imaging Spectrometer 39 infrared astronomy 39 heliophysics 39 Aeronomy 39 Commissioner Potočnik 39 Long Baseline Interferometry 39 long baseline interferometry