英文關鍵字
astrology
astronomical
astronomy
background
bang
big
cloud
cluster
cosmos
dark
deep
dust
energy
field
galaxy
gases
glow
glowing
heaven
helium
hydrogen
interstellar
ionized
light
matter
milky
nebula
nebulae
night
observation
planets
plasma
purple
rays
science
sky
space
star
stars
sun
sunlight
supernova
system
telescope
universe
way
zoom