英文關鍵字
abstract
astronomy
background
black
concept
continuum
cosmic
cosmos
curvature
curved
deformation
drop
earth
education
element
energy
field
force
galaxy
general
genius
gravitation
gravitational
gravity
hole
idea
illustration
isaac
knowledge
law
mass
matter
mesh
natural
newton
observe
physics
quantum
relativity
science
scientist
space
spacetime
spcetime
speed
star
theory
time
universe
warp