Related by context. Frequent words. (Click for all words.) 50 interferometers 50 geoid 49 atomic clocks 48 radial velocity 47 geosynchronous 47 frequency comb 47 geostationary satellites 47 gravitational wave 46 miniaturized 46 remote sensing satellites 46 Cepheids 46 interplanetary spacecraft 45 sophisticated 45 Gamma ray bursts 45 infrared telescope 45 interferometric 45 robotic rovers 45 magnetars 45 VLBI 44 cosmic ray 44 Voyager spacecraft 44 electron spins 44 satellites orbiting 44 Lagrangian 44 active galactic nuclei 44 photometer 44 powerful particle accelerator 44 microlensing 43 geostationary satellite 43 MEMS accelerometers 43 cosmic particles 43 maser 43 inertial navigation 43 astronomical telescope 43 COROT 43 precise measurements 43 particle detectors 43 collimated 42 GPS satellites 42 attosecond 42 orbiting satellites 42 sensors actuators 42 orbiting 42 metallicity 42 orbital 42 Keck telescope 42 magnetron 42 cesium atoms 42 planet Uranus 42 quantum encryption 42 spectrographs 42 nanomechanical 42 laser pulses 42 mathematical algorithm 42 reactive molecules 42 ZEISS 42 Remote sensing 42 magnetic compass 42 quantum bits 42 spatial resolution 42 tropospheric 42 XMM Newton 42 femtosecond 42 Einstein theories 42 ultrasonic sensors 41 spectral imaging 41 photodetectors 41 magnetar 41 hemispherical 41 Solar flares 41 particle accelerators 41 polar orbiting 41 analog circuitry 41 positioning satellites 41 photometry 41 WASP #b 41 optical microscopes 41 Kepler spacecraft 41 radar altimeter 41 orbits 41 Earth gravitational pull 41 observable universe 41 submicroscopic 41 Global Positioning System 41 EPOCH IPS 41 uranium thorium 40 distant galaxies 40 electron density 40 Eta Carinae 40 Resourcesat 2 40 anisotropy 40 synthetic aperture radar 40 steerable 40 diffraction pattern 40 inertial sensors 40 spectrometers 40 distant galaxy 40 quantized 40 force microscopy AFM 40 oscillatory 40 solar corona