英文關鍵字
hubble
telescope
space
researchment
equipment
tool
virtual
planetarium
launch
rocket
capsule
spectral
analysis
stars
planets
astronomical
observatory
worm
hole
moon
earth
natural
satellite
saddle
shape
universe
constellations
bolide
burning
nebula
galaxy
radio
protoplanetary
disk
panspermia
water
search
sail
star
name