Related by context. Frequent words. (Click for all words.) 56 Mauna Kea 53 astronomical observatory 52 atop Mauna Kea 51 astronomical observatories 49 Olympus Mons 49 Paranal 48 Inca ruins 48 Kitt Peak 48 observatory 48 manned lunar 48 Mauna Kea Hawaii 47 telescope 47 Thirty Meter Telescope 47 Square Kilometre Array SKA 47 ancient petroglyphs 47 Haleakala 46 Extremely Large Telescope 46 Herschel Space 46 interplanetary spacecraft 46 Pan STARRS 46 butte 45 Keck telescopes 45 Large Synoptic Survey 45 Mayan pyramids 45 Galileo telescope 45 sacred 44 Jews revere 44 Terrestrial Planet Finder 44 lichen covered 44 Solar Terrestrial Relations 44 Cagsawa 44 observatories 44 Heiau 44 Rattlesnake Mountain 44 E ELT 44 mountaintop 44 Grand Teton mountain 43 Square Kilometre Array 43 Keck Observatory 43 Mount Tenabo 43 Stratospheric Observatory 43 Large Binocular Telescope 43 Pope blesses 43 Hubble Space Telescope HST 43 glacier carved 43 Giant Magellan Telescope 43 cranes dot 43 telescopes 43 orbiting Hubble Space Telescope 42 geodesy 42 Sunset Crater 42 NASA Infrared Telescope 42 hilltop 42 Campidoglio 42 Casa Grande Ruins 42 unspoiled wilderness 42 Omega Centauri 42 astronomy 42 Pulpit Rock 42 Japan Kibo laboratory 42 MeerKAT 42 WM Keck Observatory 42 guardhouses 41 lava tubes 41 Vinson Massif 41 Wildfire threatens 41 ramadas 41 unexcavated 41 laser altimeter 41 Introducing Costa Montaña 41 ampitheater 41 astronomical telescope 41 Wrangell St 41 lava tube 41 Syangboche 41 Lunar Reconnaissance Orbiter LRO 41 Incan ruins 41 Sde Boker 41 Machu Picchu ruins 41 Superstition Mountains 41 Acropolis hill 41 Nanda Devi 41 Kitt Peak National 41 robotic rovers 41 Large Telescope 41 crypt beneath 40 Swiebodzin 40 heiau 40 Mount Meru 40 Japanese Kibo laboratory 40 lunar 40 penetrating radar 40 rock outcrop 40 Palomar Observatory 40 acropolis 40 Chimborazo 40 lotus pond 40 Mount Agamenticus 40 Weather hampers 40 sacred rituals 40 inflatable dome