throwaway; disposable; single-use
flying object (e.g. rocket, missile); projectile
sample return (mission); bringing back samples from another planet, asteroid, etc.
before very long; soon; someday; one of these days; sooner or later
seven times; many times; seventh (interval)
basis; foundation; core; criterion; standard
great; grand; extensive; large-scale
perfect; ideal; completely satisfactory; leaving nothing to be desired; faultless; impeccable
high-functioning; high-performance; sophisticated
special characteristic; special quality; trait; idiosyncrasy; peculiarity
leap; jump; stepping out into the wider world; becoming active on a wider stage; rapid progress; dramatic development
elucidation; explication; explaining; unravelling; clarification; understanding
element; chemical element; (classical) element (e.g. earth, water, air, fire); (arch.) origin; (arch.) source
self-organization; self-organisation
seeming; pose; show; pretense; sham; mock
gallery; corridor; art gallery; upper gallery (in a theatre); spectators (esp. at a golf tournament)
heated (e.g. debate); passionate
comprehensive; exhaustive; cyclopedic; encompassing
propulsion; drive; promotion (of a policy, project, movement, etc.); furtherance; advancement
willingly; voluntarily; of one's own accord
exterior; outside; outer; external; lateral
difference in temperature; difference in degrees of enthusiasm (interest, commitment, etc.); difference in attitude
to be absorbed in thought; to muse; to muse about; to think things through
the most; the extreme; prime; conspicuous
to be evident; to be obvious; to understand completely
error; fumble that leads to failing to put out a runner
annoying; infuriating; provoking; irritating; aggravating; vexing
that kind of; that way; that move; that trick; that game
disk; discus; flying saucer; disc media (CD, DVD, etc.)
extraterrestrial life; ET