willingly; voluntarily; of one's own accord
proposal; offer; request; application
homeworld; home planet; mother planet
return (home); repatriation; feedback (in an electronic circuit, biological system, etc.)
muscle; tendon; vein; artery; fiber; fibre; line
tens of thousands of years
discovery; detection; finding
faster-than-light speed; super luminal speed
distortion; falsification; perversion
wide sense (e.g. of a word); broad sense
(the) whole; as a whole; in general; at large
to fly; to soar; to jump; to leap; to spatter; to scatter; to hurry
Einstein; Einstein, Albert (1879-1955; German-born theoretical physicist)
to use; to make use of; to utilize; to utilise
episode; anecdote; vignette; episode
near light speed; sublight speed
to jump up; to start up; to leap to one's feet; to fly away; to take off
Urashima Tarō; fairy-tale fisherman who, after visiting the underwater Palace of the Dragon King, returns centuries later
Palace of the Dragon King; palace from the story of Urashima Tarō (said to be located at the bottom of the sea)
ability; performance; efficiency
number two; mistress; concubine
device; contrivance; trick; trap; (small) scale; half finished; commencement
expansion; swelling; increase; growth
departure; leaving; setting off
to become late; to fall behind; to lag; to pass (of time)
speed; velocity; pace; velocity
explanation; commentary; exposition; elucidation
expansion; extension; magnification; enlargement; escalation; spread