Related by context. Frequent words. (Click for all words.) 55 oil sheens 53 plume 52 temperature gradients 52 hydrothermal activity 52 Saturn moon Enceladus 51 obscuration 51 mesosphere 51 plumes 51 undersea volcanoes 51 lunar craters 50 icy moons 50 vapor cloud 50 subsurface 50 polar craters 50 erosional 50 gyres 50 underwater volcanoes 50 Cabeus 50 magnetic reconnection 50 aerosol particles 50 tropospheric 49 upwellings 49 polar vortex 49 Sensing Satellite LCROSS 49 upper troposphere 48 X ray emission 48 substorm 48 phytoplankton blooms 48 waterspouts 48 gaseous planets 48 magma chamber 48 collimated 48 spatial scales 48 cirrus clouds 48 infrared imagery 48 basalts 48 X ray telescopes 48 marine sediments 48 ejecta 48 ionisation 48 hydrothermal fluids 48 pyroclastic flow 48 explosive eruptions 48 laser altimeter 48 meteoroids 47 orbiting planets 47 navigational hazards 47 LCROSS spacecraft 47 temperature gradient 47 optical wavelengths 47 extrasolar 47 clathrates 47 reactor coolant 47 magnetic susceptibility 47 impactors 47 exosphere 47 plankton blooms 47 interstellar clouds 47 solar corona 46 pyroclastic 46 volcanic vents 46 sheens 46 Moderate Resolution 46 seepages 46 electromagnetic EM 46 superheated steam 46 radioactive plume 46 bathymetric 46 gravity anomalies 46 martian atmosphere 46 Sediments 46 ionised 46 lava tubes 46 Martian dust 46 fumaroles 46 vuggy silica 46 Cosmic rays 46 martian soil 46 atmospheric phenomena 46 ionized gas 46 Meridiani 46 Upper Jurassic 46 underwater plume 46 hydrothermal vent 46 rock outcrop 46 deplete oxygen 46 Saturn moon 46 radioactive byproducts 46 Saharan dust 46 temperature inversions 46 airflows 46 iron oxides 46 diffracted 46 stockwork veining 46 supernova remnant 46 radar altimeter 46 noble gases 46 Seepage 45 tectonic fault 45 EM anomalies 45 clasts