Related by context. Frequent words. (Click for all words.) 46 Thick clouds 42 metal shavings 39 stove burner 39 thick plume 39 faulty heater 38 Taurus XL rocket 38 soot particles 38 Ares IX rocket 37 spacewalking astronaut 37 smoky smell 37 dust 37 specks 37 resistant tiles 36 powdery 36 acrid smell 36 billowing clouds 36 tiny specks 36 particulate 36 rover Opportunity 36 Spacewalkers 36 comet dust 36 Shuttle Launch 34 Endeavour astronauts 34 soot 34 shuttle thermal tiles 34 clumpy 34 sooty 34 dust particles 33 orbiting shuttle 33 shavings 33 gasoline vapors 33 Russian leased Baikonur 33 spacesuits 32 ultrafine particles 32 lunar dust 32 exhaust fumes 32 particles 32 Mars rover Opportunity 32 gray haze 32 orbiting observatory 32 acrid smoke 32 gunk 32 particulates 32 coarse sand 32 putty knife 32 thick layer 32 Space Shuttle Atlantis 32 particulate matter 32 plume 31 haloes 31 ultrafine 31 rotary joint 31 ammonia tank 31 meteoroids 31 orbital module 31 Spirit rover 31 Two spacewalking astronauts 31 mist 31 shuttle underside 31 meteoroid 31 smoky haze 30 Robert Behnken 30 Thick smoke 30 airborne particles 30 cinder 30 Sulfur dioxide 30 tiny particles 30 Soviet cosmonaut Yuri Gagarin 30 debris 30 sulphates 30 lunar orbiter 30 salt crystals 30 lunar soil 30 interstellar dust 30 Dan Tani 30 cosmic dust 30 motes 30 Space Shuttle Endeavour 30 ashy 30 Soot 30 fine particulates 30 dampness 30 Kazakh steppe 30 Shane Kimbrough 30 tank insulating foam 29 silicates 29 microscopic particles 29 giant shears 29 clouds 29 shuttle payload bay 29 putrid smell 29 caulking gun 29 toaster oven 29 sandstorm 29 sawdust 29 blobs 29 orbiting complex 29 speck 29 thick haze 29 damp cloth 29 Kaleri