Related by context. Frequent words. (Click for all words.) 49 planethood 47 nicknamed Xena 46 asteroid Ceres 45 UB# [003] 44 Gliese #g 44 George Karahalios 42 By JOE LAPOINTE 41 dwarf planets 41 Pluto 41 Nicolaus Copernicus 40 orbiting telescope 40 CoRoT 7b 40 Jupiter Saturn Uranus 40 R#a# 40 dwarf planet 40 shaggy haired ace 39 PASADENA Calif. NASA 39 Messenger spacecraft 39 Earthlike 39 WASP #b 39 Vivien Schweitzer 39 ALH# 38 monotheistic religion 38 star Gliese 38 Murray TELEGRAM 38 NASA Kepler 38 gravitationally bound 38 Opportunity rover 38 super Earths 37 Clyde Tombaugh 37 Goldilocks zone 37 Big Bang theory 37 Prentice Liverpool Echo 37 Stardust spacecraft 37 Cancri 37 Hubble telescope 37 Tredrea Staff Writer 37 Wilkinson Microwave Anisotropy Probe 36 International Astronomical 36 magnetars 36 DuPree USA TODAY 36 Edwin Hubble 36 NASA Stardust spacecraft 36 Proba 2 36 Neil deGrasse Tyson 36 Raelian Movement 36 New Horizons spacecraft 36 heliocentric 36 gaseous planets 36 HD #b [002] 36 actor Balthazar Getty 35 XMM Newton 35 Compton Gamma Ray 35 Exoplanet 35 exosphere 35 Toutatis 35 planet Uranus 35 BY NIDA BUENAFE 35 defenseman Scott Niedermayer 35 Phaethon 35 Mark Swed 35 planetoid 35 IAU 35 hot Jupiters 35 Raptorex 35 Union IAU 35 potentially habitable 35 rover Spirit 35 brown dwarf 35 Bradley Schmeling 34 faraway galaxies 34 Saturn rings 34 supernova explosion 34 Hubble Space Telescope 34 orbiting Hubble Space Telescope 34 Saturn moon 34 Randall Grahm 34 meteoroids 34 Hubble servicing 34 James Lovelock 34 astronomers 34 William Borucki 34 exoplanets 33 Sara Seager 33 God Particle 33 Veronica Lario 33 Cassini Huygens 33 MN4 33 asteroid 33 Raelians 33 Swartz Managing Editor 33 OSIRIS REx 33 icy moons 33 COROT 33 rover Opportunity 33 planet orbiting 33 microlensing 33 KV# 33 twin rover Opportunity 33 Voyager spacecraft 33 Hubble