SimilarityRank
space_shuttle 0.662 81402
spacecraft 0.641 12247
astronaut 0.640 16889
on_the_moon 0.634 35559
the_Moon 0.633 9806
NASA 0.630 4997
orbiter 0.618 92095
the_International_Space_Station 0.600 61329
space_station 0.594 35861
Mars 0.593 6486
space_exploration 0.587 37186
Hubble 0.586 49607
asteroid 0.571 19862
lander 0.570 74502
on_Mars 0.567 39049
spaceship 0.561 40441
at_NASA 0.559 84980
Martian 0.558 36404
the_moon 0.556 5760
JPL 0.549 94014
Star_Trek 0.548 27052
Curiosity 0.544 86989
Titanic 0.533 53233
ISS 0.530 18099
a_comet 0.530 83115