俗话说“条条大路通罗马”，背诵
天文
celestial
universe
universal
orbit
comet
galaxy
constellation
asteroid
planet
chondrite
cluster
meteor
dwarf
star
stellar
cosmos
cosmic
cosmology
nebula
quasar
space
planeroid
intergalactic
interplanetary
interstellar
corona
chromosphere
solar
photosphere
pseudoscience
astronomy
astronomical
astrology
astrophysics
Jupiter
lunar
Mars
mercury
Earth
Uranus
Venus
Pluto
Neptune
Saturn
emission
infinite
interferometer
radiation
revolve
land
spaceship
spacecraft
telescope