Related by context. Frequent words. (Click for all words.) 57 constellation Taurus 57 X ray telescopes 56 constellation Virgo 55 red supergiant 55 #C# [009] 55 galaxy NGC 54 Epsilon Eridani 54 star Gliese 54 Crab Nebula 54 Spectroscopic 54 constellation Sagittarius 54 CoRoT 53 globular star 53 Kepler #b 53 Pegasi 53 GALEX 53 extrasolar 53 HAT P 53 planet orbits 53 Eagle Nebula 53 coronagraph 52 Neutron stars 52 boson 52 millisecond pulsars 52 Earthlike 52 photometer 52 COROT 52 interplanetary spacecraft 52 constellation Lyra 52 globular cluster 52 Lyman alpha 52 HD# [005] 52 planet Uranus 52 Toutatis 52 magnetars 52 planetary nebula 52 gravitational lens 52 gravitationally bound 52 radial velocity 52 antiproton 51 NASA Spacecraft 51 HD #b [002] 51 spectrographs 51 baryons 51 cigar shaped 51 elliptical galaxy 51 Spectrometers 51 interferometers 51 M# M# [001] 51 active galactic nuclei 51 unaided eye 51 photometry 51 Paul Dirac 51 microlensing 51 Type Ia 50 Andromeda Galaxy 50 LOFAR 50 galaxy cluster 50 TrES 50 Cepheids 50 WASP #b 50 hose reel jet 50 Magellanic Clouds 50 Gliese #g 50 spiral galaxy 50 Orion Nebula 50 Cosmic rays 50 Type Ia supernova 50 spacecraft orbiting 50 TU# [002] 50 transiting planet 50 planet orbiting 50 Interferometer 50 OGLE 50 soliton 50 gaseous planets 50 transiting planets 50 Phaethon 49 Betelgeuse 49 constellation Orion 49 Pulsars 49 Viking landers 49 Galaxy Evolution 49 AGNs 49 #.# MHz [002] 49 Albireo 49 distant galaxy 49 God Particle 49 magnetar 49 tetrahedron 49 extrasolar planet 49 stellar nurseries 49 Cancri 49 Cosmologists 49 gravitational radiation 49 Hyades 49 VIRTIS 49 protostars 49 Flyby 49 Mauna Kea Hawaii 49 moonlets