Related by context. Frequent words. (Click for all words.) 52 X ray emission 48 unaided eye 45 luminosity 45 luminous 44 nebulae 43 starbursts 43 iridescence 42 infrared radiation 40 bluish 39 photons 39 bioluminescent 39 starburst 39 reddish color 39 fluoresce 39 celestial 39 luminescent 38 pulsations 37 twinkles 37 sapphire blue 37 reddish orange 37 orbs 36 magnetic fields 36 radiate 36 phosphorescent 36 sunbeams 36 infrared rays 36 radiating 35 rays 35 fluorescent 35 eerie glow 35 opalescent 35 silvery 35 radiance 34 iridescent 34 magnetism 34 dimmest 34 vortexes 34 glows 34 illuminating 33 refracted 33 radiant 33 electromagnetic waves 33 electrons 33 vivid colors 33 emitted 33 purplish 33 concentric rings 33 reflective surfaces 33 primordial 32 indefinable 32 pearly white 32 irregularly shaped 32 glowing 32 shinning 32 coppery 32 sunbeam 31 florescent 31 inky 31 pulsed 31 greenish 31 azure 31 greyish 31 orangey 31 glassy 30 starry 30 angular 30 evanescent 30 translucent 30 telltale 30 beams 30 pinkish 30 heavenly 30 glimmering 30 glow 30 pulsates 29 starry sky 29 innermost 29 illuminate 29 radiates 29 protrude 29 curvilinear 29 auras 29 shines brightly 29 twinkled 29 wisps 28 ghostly 28 sun rays 28 glints 28 glowed 28 oracular 28 shimmering 28 multihued 28 shimmer 28 mushroom shaped 28 gunmetal gray 28 outer 28 brilliantly colored 28 illuminated 28 light 28 twinkling 28 golden hue