SimilarityRank
supernova 0.839 47013
NGC_[number] 0.788 64522
pulsar 0.776 56249
nebula 0.773 48385
galaxy 0.770 7128
exoplanet 0.752 88229
the_Milky_Way 0.733 65157
dark_matter 0.726 32284
black_hole 0.709 19818
comet 0.696 16244
neutrino 0.695 41916
our_solar_system 0.685 82880
Hubble 0.678 49607
cosmic_ray 0.674 60042
dark_energy 0.656 55834
asteroid 0.651 19862
our_universe 0.648 66180
the_solar_wind 0.643 80824
the_solar_system 0.637 21341
Herschel 0.636 88675
gamma_ray 0.635 77142
photon 0.633 18937
sunspot 0.632 64517
young_star 0.626 99709
galactic 0.626 60709