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(Click for frequent words.) 60 ESO VLT 60 Kepler Mission 59 astrometric 59 ESO PR 59 Spaceweather.com 58 XMM Newton 58 NASA Wilkinson Microwave 57 J# +# [002] 57 Cosmic Evolution 57 ESO telescopes 57 DISR 56 GALEX 56 transiting exoplanets 56 Astrophysical 56 LCROSS Observation Campaign 56 SDSS II 56 RXTE 55 XMM Newton observations 55 ESO astronomer 55 UKIRT 55 microlensing events 55 Hipparcos 55 DEEP2 55 FORCAST 55 Anisotropy Probe 55 COROT 54 CFHT 54 ESO telescope 54 spaceweather.com 54 spectroscopic observations 54 exoplanetary 54 AKARI 54 VIRTIS 54 eclipsing binary 54 NASA STEREO 54 CoRoT satellite 53 ESA Integral 53 STScI 53 Southern Observatory ESO 53 Popular Astronomy 53 MINOS 53 occultations 53 AMSAT NA 53 NOAO 53 Planck satellite 53 astrometry 53 Lunar Reconnaissance Orbiter LRO 53 Submillimeter 53 GRB # 53 Fermi Gamma ray 53 stellar occultations 53 2MASS 52 Fermi telescope 52 INTEGRAL 52 Science Popularisation Association 52 SOHO spacecraft 52 Paranal Chile 52 extrasolar planetary systems 52 NASA Cosmic Background 52 NASA Cassini 52 Extrasolar Planet Search 52 ESA Planck 52 Pasachoff 52 twin STEREO spacecraft 52 Krimigis 52 noctilucent clouds 52 Syun Ichi Akasofu 52 MicroFUN 52 RAS Observatory 52 ESA Envisat 52 Exoplanet 52 LOFAR 52 IRTF 52 NASA EPOXI mission 52 ROSAT 52 gravitational microlensing 52 CoRoT 52 Delta Cephei 52 Gaensler 52 OGLE TR 52 Jenniskens 52 astronomers 52 distant supernovae 52 Digitized Sky Survey 52 Hubble observations 52 ESA ERS 52 Comet Hartley 2 52 ESA XMM Newton 52 Cassini Imaging 52 VLBI 52 HiRISE 52 distant quasars 52 Optical Gravitational Lensing Experiment 52 polarimetric 52 KBOs 52 Emily Lakdawalla 52 KIPAC 52 EPOXI 51 Mössbauer 51 Triangulum Galaxy 51 altimetry 51 Harlow Shapley 51 orbiting gamma ray 51 Comet Halley 51 HD# [002] 51 TW Hydrae 51 Thermal Emission 51 XMM Newton satellite 51 Astronomy 51 DZero 51 ESA SMART 51 KamLAND 51 RHESSI 51 microlensing 51 Orbiter LRO 51 astronomical observations 51 CTIO 51 GRB #B 51 Occultation 51 photometry 51 spectroscopically 51 Sunyaev 51 Konacki 51 Japan NAOJ 51 JDEM 51 martian meteorites 51 Pan STARRS 51 Spectrograph 51 SMOS 51 Wilkinson Microwave Anisotropy Probe 51 gravitational wave 51 GRB# 51 radar altimetry 51 Meteoritics 51 extragalactic 51 Moonwatch 51 HUDF 51 Arecibo Observatory 51 ESA Rosetta 51 SkyCenter 51 RS Ophiuchi 51 ESA Herschel 51 Comet Hartley 50 NASA THEMIS 50 NEAs 50 SPIRE 50 Slooh 50 ENVISAT 50 Spacewatch 50 Great Observatories 50 STEREO spacecraft 50 Active Galactic Nuclei 50 Convection Rotation 50 spectroscopic measurements 50 Astrophysics MOA 50 inch Samuel Oschin 50 UVOT 50 JCMT 50 astrophysical phenomena 50 Gamma ray Burst 50 gamma ray observatory 50 PlanetQuest 50 Saul Perlmutter 50 Keck telescope 50 Galaxy Evolution 50 Ulysses spacecraft 50 Extrasolar Planets 50 Rathnasree 50 VLTI 50 CfA 50 TRMM satellite 50 Cepheids 50 Keck Interferometer 50 Spaceguard 50 ASPERA 50 gamma ray burst 50 Fermi LAT 50 George Djorgovski 50 Cepheid variables 50 Foing 50 multiwavelength 50 geomagnetism 50 planet TrES 50 Gemini Observatory 50 Hubble Space Telescope HST 50 http:/saturn.jpl.nasa.gov 50 NASA WMAP 50 MiniBooNE 50 Alaska Fairbanks Geophysical 50 Mars Reconnaissance Orbiter MRO 50 radiotelescope 50 IYA# 50 BaBar 50 Observatoire de Paris 50 NASA Kepler 50 Rosetta orbiter 50 imaging spectrometer 50 Sasselov 50 distant quasar 50 astrophysical objects 50 Komossa 50 CDMS II 50 Ring Nebula 50 rocky extrasolar planet 50 Heliospheric Observatory SOHO 50 Observatory LDEO 50 planetary Transits 50 Wolfgang Brandner 49 SOHO LASCO 49 Submillimeter Array 49 Hipparchus 49 optical interferometry 49 Gal Yam 49 astronomical objects 49 Sagittarius Window Eclipsing 49 X ray telescopes 49 APEX telescope 49 redshift 49 TrES 49 LRO spacecraft 49 infrared astronomy 49 Microlensing Observations 49 ESO Very Large Telescope 49 MIT Haystack Observatory 49 optical spectra 49 Adaptive Optics 49 NASA Far Ultraviolet 49 VLBA 49 HARPS instrument 49 galaxy M# [001] 49 Extrasolar Planet Observation 49 Using ESO Very 49 SEGUE 49 Infrared Pathfinder Satellite 49 faint galaxies 49 SN #A 49 Diviner 49 ESA Cluster 49 RRATs 49 ray Space Telescope 49 HARPS 49 SpaceWeather.com 49 Pluto Charon 49 Peter Jenniskens 49 Cassini 49 extrasolar planet 49 starburst galaxies 49 NASA Cassini spacecraft 49 Heavens Above 49 Subaru Telescope 49 radial velocity 49 Solar Orbiter 49 AERONET 49 ASKAP 49 SDSS 49 Lunar Orbiter Laser Altimeter 49 Stadermann 49 Observatory SDO 49 Mercury flyby 49 DEIMOS 49 Kuiper belt objects 49 HiRISE camera aboard 49 Descent Imager Spectral Radiometer 49 extrasolar planets 49 Werthimer 49 National Astronomical Observatory 49 OGLE 49 LROC 49 CIRS 49 Cancri e 48 Cassini Plasma Spectrometer 48 satellite altimetry 48 spectroscopic 48 WMAP satellite 48 Steward Observatory 48 arXiv.org 48 Wilkinson Microwave Probe 48 Gamma ray 48 SINFONI 48 PSR J# 48 Photometric 48 X ray observatory 48 infrared interferometry 48 Keck Telescope 48 Anisotropy Probe WMAP 48 solar corona 48 SNfactory 48 THEMIS satellites 48 Marchis 48 Mars Orbiter Camera 48 Plate Boundary 48 binary quasar 48 SPICAM 48 http:/www.nasa.gov/cassini 48 Explorer GALEX 48 Multi Object Spectrometer 48 Herschel SPIRE 48 Supernova Cosmology Project 48 Cassini Huygens 48 Royal Astronomical Society 48 LUCIFER 48 GRBs 48 Astrophysics Cambridge Mass. 48 Nasa Mars Reconnaissance 48 X ray binary 48 gravitational lenses 48 Wide Angle Search 48 THEMIS 48 Earthshine 48 INMS 48 Halton Arp 48 celestial objects 48 #P/Holmes 48 Mars Orbiter 48 Envisat satellites 48 arXiv 48 Ultraviolet Imaging Spectrograph 48 Area Telescope LAT 48 millisecond pulsar 48 ALFALFA 48 NASA ESA Hubble 48 neutron spectrometer 48 AATSR 48 Helix Nebula 48 Earthscope 48 YU# 48 Infrared Array Camera 48 EPOCh 48 ASTRON 48 HiRISE images 48 Hubble Near Infrared 48 auroral 48 CoML 48 Lyot 48 NASA LCROSS 48 HARPS spectrograph attached 48 Quadrantids 48 X ray observatories 48 Spitzer Infrared Array 48 muon neutrino 48 Giovanni Cassini 48 Mauna Kea Hawaii 48 Grillmair 48 LOFAR telescope 48 XMM Newton observatory 48 Telescope BAT 48 planetary nebulae 48 Keck Observatory 48 Interferometer 48 AMSAT 48 Infrared Camera 48 IRAS 48 gamma ray spectrometer 48 HiRISE image 48 INTEGRAL satellite 48 TerraSAR X 48 EVLA 47 NASA Interstellar Boundary 47 galaxy NGC 47 NASA Great Observatories 47 Galileoscope 47 arcminutes 47 spectrographs 47 Space Telescope 47 Nasa Kepler 47 Igor Chekalin 47 tau neutrino 47 Cassini flyby 47 Flyby 47 Swift Burst 47 NASA MODIS 47 preprint server 47 Imaging Experiment AMIE 47 NASA Fermi Gamma 47 radio occultation 47 submillimetre 47 BFRO 47 Doppler measurements 47 National Astronomical Observatories 47 MESSENGER 47 WM Keck Observatory 47 supercomputer simulations 47 Photoacoustic 47 NASA CloudSat 47 Robotic Lunar Exploration 47 Herschel Space 47 HRSC 47 IGBP 47 transiting planets 47 IceCube 47 Huygens descent 47 Landsat images 47 Cosmic Background Explorer 47 Tod Strohmayer 47 Observatories 47 Observatory STEREO 47 space.com 47 Hinode spacecraft 47 extrasolar 47 Spectroscopic 47 WISE infrared 47 polarimetry 47 MN4 47 interferograms 47 Louis Stodieck 47 LORRI 47 SeaWiFS 47 gravitational lens 47 Planck telescope 47 Explorer WISE 47 constellations planets 47 ESO Paranal Observatory 47 Elenin 47 Climate Experiment GRACE 47 UCO Lick 47 Multi Object Spectrograph 47 Total Ozone Mapping 47 distant galaxy clusters 47 NRSA 47 Interior Laboratory GRAIL 47 Great Observatories Origins 47 NASA Moon Mineralogy 47 occultation 47 Peru Geophysics 47 Ionosphere 47 Space Interferometry Mission 47 Context Camera 47 microquasar 47 LRO 47 Omega Centauri 47 Boethin 47 CRISM 47 Cosmic Background Explorer COBE 47 VIMOS 47 Crab Pulsar 47 planemos 47 journal Icarus 47 NAOJ 47 stellar occultation 47 G#.# +#.# 47 Planetology 47 MARSIS 47 Track Scanning Radiometer 47 SuperWASP 47 blazars 47 Edmund Halley 47 galaxy formation 47 Rainer Klement 47 UVIS 47 amateur astronomers 47 APRS 47 TanDEM X 47 exoplanet 47 AMIE camera 47 observatories 47 Pancam 47 SIRTF 47 Neutron Spectrometer 47 NASA Planetary 47 DIXI 47 sub millimeter wavelengths 47 Cassini imaging 47 Gliese #d 47 ATLAS detector 47 AB Aurigae 46 Gliese #e 46 z ~ 46 SSRL 46 Fred Espenak 46 NASA MESSENGER 46 FORMOSAT 46 type Ia supernovae 46 LCLS 46 IARU Region 46 N. Rathnasree 46 Comet Holmes 46 Aqua satellite 46 comet McNaught 46 ALMA antennas 46 exo planet 46 active galactic nuclei 46 EPOXI spacecraft 46 constellation Centaurus 46 AMSR E 46 Richard Mushotzky 46 submillimetre wavelengths 46 Heliophysics 46 Epoxi 46 Magnetosphere 46 gamma ray bursts 46 Molczan 46 FUV 46 optical telescopes 46 Educators SPACE 46 Planets WASP 46 Planck 46 Fermi Telescope 46 Rosetta spacecraft 46 Mary Voytek 46 MErcury Surface Space ENvironment 46 Infrared Thermal Imaging Spectrometer 46 Maciej Konacki 46 dust enshrouded 46 Comet #P 46 Dennis Mammana 46 Red Rectangle 46 asteroid Vesta 46 Kuiper Belt Objects 46 antineutrinos 46 de Pater 46 Oscillations 46 pulsars 46 Ray Villard 46 Cloud Aerosol Lidar 46 ESA Envisat satellite 46 LHC experiments 46 Epsilon Aurigae 46 Ionospheric 46 NASA Stratospheric Observatory 46 Astronomical 46 mu Arae 46 Pioneer Anomaly 46 MEPAG 46 Mini SAR 46 journal Acta Astronautica 46 Faint Object 46 GMRT 46 X ray spectrometer 46 Andromeda Galaxy M# 46 planets orbiting distant 46 Reflection Radiometer 46 Earth Asteroid 46 distant galaxy 46 Normalized Difference Vegetation 46 COBE 46 Electrodynamics 46 NOAA GOES 46 CALIPSO 46 NASA Goddard 46 Astrophysical Research 46 Cassini Huygens spacecraft 46 ACS WFC 46 aboard ESA Envisat 46 Insider Filing 46 WASP #b 46 supernova SN 46 Exoplanets 46 Chandra Observatory 46 Pisgah Astronomical Research 46 Ted Molczan 46 Duari 46 APXS 46 comet nucleus 46 Thematic Mapping 46 ultraviolet spectrometer 46 Astrophysics 46 orbiting Hubble Space Telescope 46 e VLBI 46 extrasolar planetary 46 Lunar Laser Ranging 46 Gerard Kuiper 46 Sounder AIRS instrument 46 CloudSat 46 Jennifer Heldmann 46 Orion Nebula 46 SECCHI 46 Geoscience Laser Altimeter 46 spectrographic 46 WMAP 46 astronomical phenomena 46 Henize #-# 46 Lunar Exploration 46 ARRL Contest Branch 46 telescopic observations 46 Joe Moell 46 Physics Letters 46 CCSDS 46 Kepler Space Telescope 46 RSGB 46 Johny Setiawan 46 exoplanets orbiting 46 Collider Detector 46 Karl Menten 46 cosmological observations 46 spiral galaxy NGC 46 Instrument OMI 46 Heterodyne Instrument 46 Voyager spacecraft 46 geoneutrinos 46 Lunar Reconnaissance Orbiter Camera 46 Mars orbiting spacecraft 46 journal Monthly Notices 46 Gruber Cosmology Prize 46 XMM Newton X ray 46 Manchester Jodrell Bank 46 exoplanet orbiting 46 redshifts 46 NASA GISS 45 Rathnashree 45 Sara Seager 45 ESO 45 EPOXI mission 45 Mars CRISM 45 SORCE 45 J#.# [001] 45 Gamma ray burst 45 Charles Bailyn 45 Microlensing Follow Up 45 Planetary Transits 45 SNe Ia 45 Solar Dynamics Observatory 45 Neukum 45 planetary astronomer 45 HAT P 45 High Angular Resolution 45 MPIfR 45 Dave Reneke 45 Ferenc Krausz 45 Catherine Cesarsky 45 exoplanets 45 Aeronomy 45 HD#b 45 Astrobiology Magazine 45 Reneke 45 Cospas Sarsat 45 Lowell Observatory 45 interferometric 45 asteroid Steins 45 Moon Mineralogy Mapper M3 45 GRB #A 45 WFC3 45 millimeter wavelengths 45 gravitationally lensed 45 ESA Earth Observation 45 Schawinski 45 composite infrared spectrometer 45 starburst galaxy 45 skywatching 45 Solar Terrestrial Physics 45 Cometary 45 observational astronomy 45 Churyumov Gerasimenko 45 Guhathakurta 45 DZero collaboration 45 Hubble Space 45 STEREO 45 LIGO 45 HIAPER 45 Nankai Trough Zone 45 Huchra 45 Fermi Large 45 Volker Liebig ESA 45 asteroseismology 45 infrared telescopes 45 SUSY 45 photometer 45 LIGO Scientific Collaboration 45 Crab Nebula 45 NASA Heliophysics 45 Biblical Archaeology Society 45 Drake Equation 45 Perseids Meteor Shower 45 SNR #-#.# 45 planetary nebulas 45 Microlensing 45 Astrophysicist 45 Hyakutake 45 NASA Infrared Telescope 45 Interferometric 45 submillimeter wavelengths 45 Paleoclimate 45 Magellanic Clouds 45 substorm 45 http:/arxiv.org/abs/#.# 45 globular clusters 45 NASA ICESat 45 Astrophysicists 45 Fomalhaut b 45 Henrik Svensmark 45 Electron Microscope 45 planet Gliese #g 45 SDSS III 45 periodicities 45 ATLAS experiment 45 WWV 45 Small Magellanic Cloud 45 Gemini Telescope 45 NASA Landsat 45 Andromeda Galaxy 45 Astrophysical Journal Supplement 45 XTE J# 45 ultracold gases 45 Galileo spacecraft 45 Landsat satellite 45 Lars Prahm 45 JLab 45 NASA Kepler spacecraft 45 HARPS spectrograph 45 Meteor Showers 45 www.exploratorium.edu 45 QSOs 45 Jacques Laskar 45 Djorgovski 45 novae 45 particle astrophysics 45 MEarth 45 Carl Luetzelschwab K9LA 45 IARU 45 supersymmetric particles 45 Very Large Array 45 Solar Observatory 45 Quadrantid meteor shower 45 rover panoramic 45 Relations Observatory STEREO 45 X ray emission 45 Herbig Haro 45 astrophysicists 45 HUDF# 45 Filippenko 45 X ray pulses 45 Super Kamiokande 45 Spitzer Space Telescope 45 Mars Color Imager 45 Laser Interferometer Space 45 Apophis asteroid 45 Orbiter spacecraft 45 Reinhard Genzel 45 Kuiper Belt Object 45 BLG #Lb 45 Evolution Explorer 45 Advanced Microwave Scanning 45 Solar TErrestrial RElations Observatory 45 Alessandro Morbidelli 45 redshift z = 45 ESO La Silla 45 Jupiter moons 45 Comet Lulin 45 Caltech astronomer 45 Long Baseline Interferometry 45 Antenna LISA 45 AMASE 45 Jacques Vallee 45 occulted 45 Imaging Spectrometer 45 Meteoritical Society 45 Tropical Rainfall Measuring 45 intrinsic brightness 45 QQ# 45 Gondolo 45 NASAs 45 Glacier Monitoring 45 USArray 45 Toutatis 45 Tycho Brahe 45 lobate scarps 45 TrES 4 45 Orbiter MRO 45 P/# A2 45 Palomar Observatory 45 SEDS 45 gamma ray burst GRB 45 proton proton collisions 45 Taurid 45 brightnesses 45 inch refractor telescope 45 RY Sagittarii 45 Ultraviolet Imaging Spectrograph UVIS 45 Observable 45 Deep Impact eXtended Investigation 45 NanoSIMS 45 supernovae 45 telescope atop Mauna 45 celestial object 45 Neil DeGrasse Tyson 45 astrophysical 45 Cancri 45 StarDate 45 Avishay Gal Yam 45 telescopes 45 Robin Scagell 45 Taylor Dinerman 45 ULP cepheids 45 Magnetospheric 45 Deep Impact Principal Investigator 45 NASA Chandra 44 NICMOS 44 WFPC2 44 interferometer 44 Viking Lander 44 Ozone Monitoring 44 Celestron SkyScout 44 Fundamental Physics 44 WIYN 44 detect gravitational waves 44 exo planets 44 Subaru telescope 44 Huygens mission 44 Siding Spring 44 Epsilon Eridani 44 ALICE experiment 44 SMEX 44 GLAST Burst Monitor 44 La Silla Chile 44 Mission SRTM 44 CMEs 44 Ecological Observatory 44 Rolf Kudritzki 44 CB Devgun 44 infrared observatory 44 VISTA telescope 44 NASA Deep Impact 44 Gamma Ray 44 gravitational lensing 44 Dean Pesnell 44 Titan flyby 44 Kaltenegger 44 X ray absorption spectroscopy 44 Extragalactic 44 distant galaxies 44 Samuel Oschin Telescope 44 Comet Hale Bopp 44 InfraRed 44 SMOS Soil Moisture 44 Solar Terrestrial Relations 44 Mini Thermal Emission 44 Observatory astronomer 44 Landsat satellites 44 SPIRE instrument 44 astronomical telescope 44 Leonid meteor showers 44 YES2 44 MPIA 44 spiral galaxy Messier 44 absorption spectra 44 Kailash Sahu 44 NIRSpec 44 NASA GSFC 44 IODP 44 Lunar Crater 44 Telescope 44 Sigurd Hofmann 44 GISS 44 extrasolar planets orbiting 44 exoplanets planets 44 nasa.gov 44 ultrahigh resolution 44 cosmic microwave radiation 44 gamma ray flares 44 Kepler #b 44 Wilfried Haeberli 44 EarthCARE 44 Nikku Madhusudhan 44 Credits ESA 44 SuitSat 44 interferometric observations 44 cluster NGC 44 Percival Lowell 44 supersymmetric 44 meter Keck telescope 44 star clusters nebulae 44 Telescope Array 44 gravitational waves 44 GRAIL 44 Freie Universitaet Berlin 44 Infrared Astronomical Satellite IRAS 44 CDMS experiment 44 Keck telescopes 44 Astronomical Society 44 UDFy # 44 MiniBooNE experiment 44 EarthScope 44 Planetary Science Institute 44 constellations Cygnus 44 Jeffrey Kargel 44 Extraterrestrial Intelligence Institute 44 NASA Mars Orbiter 44 galaxy redshift 44 magnetar 44 cosmic ray 44 Global Surveyor 44 cosmological distances 44 Pierre Simon Laplace 44 Alex Filippenko 44 Astrobiology Institute 44 type 1a supernovae 44 bolometers 44 SETI Search 44 Earth Observation Programmes 44 Compact Array 44 weak gravitational lensing 44 Photobiology 44 Envisat 44 detect gamma rays 44 UA Steward Observatory 44 Burst Alert 44 SciDAC 44 Lulin Observatory 44 Amateur Astronomers 44 DRAO 44 visit http:/saturn.jpl.nasa.gov 44 Astrophysical Journal 44 TU# [002] 44 Synthetic Aperture Radar SAR 44 cosmological parameters 44 astrophotography 44 Sky Survey SDSS 44 amateur skywatchers 44 Vakoch 44 Space Infrared Telescope 44 Synchrotron Radiation 44 Hubble Constant 44 flyby spacecraft 44 RPWS 44 Energy Solar Spectroscopic 44 Mount Stromlo Observatory 44 Mars Phobos 44 situ measurements 44 inch refractor 44 De Pontieu 44 LCROSS 44 luminous galaxies 44 IYA 44 Hubble Ultra 44 Michael Studinger 44 magnetars 44 Relativistic 44 gamma ray spectrometry 44 Very Large Telescope 44 Robin Scagell vice 44 Amateur astronomers 44 Chris Lintott 44 Auroral 44 THEMIS Images 44 OGLE TR #b 44 Lunokhod 44 GROND 44 galaxy cluster 44 KAGUYA 44 retrograde orbit 44 Metop 44 neutrino detectors 44 GOSAT 44 Geosphere 44 Solar Dynamics 44 Inside GNSS 44 VIRTIS instrument 44 Svensmark 44 IfA 44 NASA Kepler telescope 44 NASA Mars Odyssey 44 TGFs 44 Keck Telescopes 44 Envisat satellite 44 Comet Encke 44 Lamont Doherty 44 HPWREN 44 brown dwarf 44 Stephan Quintet 44 Space.com 44 OSIRIS 44 ESA ASI 44 barred spiral galaxy 44 Comet #P/Holmes 44 Envisat Advanced Synthetic Aperture 44 NASA Lunar Reconnaissance 44 Gehrels 44 ATST 44 Interstellar Boundary Explorer 44 Borexino 44 Virgo Cluster 44 Arizona Steward Observatory 44 geomagnetic activity 44 laser altimeter 44 radial velocity technique 44 USGS Hawaiian Volcano 44 Kuchner 44 Neutral Mass Spectrometer 44 Infrared Telescope Facility 44 Alycia Weinberger 44 globular cluster 44 gamma ray telescopes 44 earthshine 44 AGNs 44 Higgs bosons 43 paleomagnetic 43 Infrared Mapping Spectrometer VIMS 43 Solar Terrestrial 43 Finnish Meteorological 43 Cassini Orbiter 43 dwarf galaxy 43 EGRET 43 optical wavelengths 43 Swift Ultraviolet Optical 43 infrared spectra 43 jovian 43 Jupiter magnetosphere 43 Chodas 43 Mesoscale 43 Measurement Techniques