space travel

noun 0.800

space research

noun 0.793

exploration

noun 0.758

space science

noun 0.746

space flight

noun 0.726

space mission

noun 0.715

space technology

noun 0.696

outer space

noun 0.676

exploring

noun 0.674

spacefaring

noun 0.671

exploratory

noun 0.650

explore

noun 0.648

astronautics

noun 0.634

space race

noun 0.628

spacecraft

noun 0.626

deep space

noun 0.623

expedition

noun 0.621

spaceship

noun 0.614

space age

noun 0.610

space medicine

noun 0.605

space satellite

noun 0.604

exobiology

noun 0.587

astrobiology

noun 0.586

space communication

noun 0.584

space shuttle

noun 0.584

space vehicle

noun 0.584

planetary science

noun 0.584

urban exploration

noun 0.583

interplanetary space

noun 0.576

space motion

noun 0.574

spaceport

noun 0.571

experimentation

noun 0.570

expeditionary

noun 0.568

space station

noun 0.567

explorer

noun 0.565

rocket science

noun 0.564

expanse

noun 0.558

space walk

noun 0.556

extravehicular activity

noun 0.556

interstellar space

noun 0.554

space environment

noun 0.553

spaceplane

noun 0.553

astronaut

noun 0.552

aerospace

noun 0.549

space navigation

noun 0.548

rocket ship

noun 0.539

experimenting

noun 0.537

space

noun 0.535

rocketry

noun 0.534

space tourist

noun 0.527

space debris

noun 0.527

excavation

noun 0.525

space junk

noun 0.522

spaceman

noun 0.520

function space

noun 0.519

cosmonaut

noun 0.519

spacewalk

noun 0.519

space suit

noun 0.518

moon landing

noun 0.517

experimental

noun 0.516

planetology

noun 0.516

experiment

noun 0.516

excursion

noun 0.515

extrasolar planet

noun 0.515

space opera

noun 0.514

science fiction

noun 0.514

scouting

noun 0.514

experimentalism

noun 0.512

expansionism

noun 0.511

adventure

noun 0.509

geospace

noun 0.507

space elevator

noun 0.505

n space

noun 0.505

space cadet

noun 0.503

environmental science

noun 0.503

astrobiologist

noun 0.503

telescope

noun 0.501

astrophysics

noun 0.500

cosmodrome

noun 0.500