SimilarityRank
spacecraft 0.703 12247
space_station 0.671 35861
orbit 0.657 8766
spaceship 0.655 40441
on_the_moon 0.655 35559
the_International_Space_Station 0.625 61329
from_Earth 0.619 64243
space_shuttle 0.618 81402
astronaut 0.608 16889
the_solar_system 0.604 21341
orbiter 0.596 92095
outer_space 0.594 45198
lander 0.588 74502
the_moon 0.584 5760
asteroid 0.579 19862
Mars 0.576 6486
rover 0.575 31046
a_comet 0.569 83115
on_Mars 0.568 39049
the_Moon 0.567 9806
comet 0.563 16244
space_travel 0.559 62675
space_exploration 0.557 37186
into_the_sky 0.556 81104
satellite 0.556 4364