SimilarityRank
quasar 0.839 61018
galaxy 0.776 7128
nebula 0.742 48385
exoplanet 0.736 88229
NGC_[number] 0.736 64522
pulsar 0.731 56249
dark_matter 0.719 32284
black_hole 0.709 19818
comet 0.707 16244
neutrino 0.706 41916
the_Milky_Way 0.684 65157
cosmic_ray 0.680 60042
gamma_ray 0.678 77142
dark_energy 0.674 55834
the_Big_Bang 0.674 46860
asteroid 0.662 19862
Hubble 0.653 49607
our_solar_system 0.649 82880
galactic 0.647 60709
young_star 0.640 99709
in_the_Universe 0.639 97244
astronomer 0.624 20224
our_universe 0.623 66180
neutron 0.619 24797
the_solar_wind 0.617 80824