英文關鍵字
alien
atmosphere
big
blue
clouds
enormous
fiction
field
future
futuristic
galactic
galaxy
gas
gaseous
huge
interplanetary
large
mars
moon
moving
neptune
new
orbit
orbiting
orbits
planet
planets
science
scifi
ship
space
spaceship
star
travel
traveling
travels
ufo
universe
vehicle
vessel
voyage
world
worlds