SimilarityRank
solar_activity 0.712 98984
comet 0.655 16244
the_solar_wind 0.640 80824
nebula 0.634 48385
quasar 0.632 61018
cosmic_ray 0.624 60042
supernova 0.607 47013
meteor 0.600 36079
the_sun 0.598 2677
the_Milky_Way 0.596 65157
exoplanet 0.589 88229
our_solar_system 0.587 82880
pulsar 0.584 56249
solar_radiation 0.579 50199
the_solar_system 0.577 21341
dark_spot 0.576 78609
magnetic_field 0.575 15604
moon 0.572 11556
NGC_[number] 0.570 64522
Hubble 0.565 49607
a_comet 0.561 83115
from_the_sun 0.557 31410
Uranus 0.554 36509
ultraviolet_light 0.553 95049
aurora 0.549 59207