eclipse
n.日食;月食
nadir
n.(天)天底，最低点
cosmography
n.宇宙志，宇宙(结构)学
Cosmography is the study of the visible universe that includes geography and astronomy.
宇宙结构学是对包括地理和天文学在内的可见宇宙的研究。
astrophysics
n.天体物理学
orbit
n.轨道(track, path)
How many satellites have been put into the earth's orbit round the sun? / Our planet is in orbit around the sun.
有多少颗卫星被放置在地球绕太阳运行的轨道上?/地球绕太阳运行。
cluster
n.星团
dwarf
n.白矮星
quasar
n.恒星状球体，类星体
chromosphere
n.色球
pseudoscience
n.假科学，伪科学
Jupiter
n.木星
lunar
adj.月的，月亮的
Mercury
n.水星
Uranus
n.天王星
Venus
n.金星
Neptune
n.海王星
Saturn
n.土星
interferometer
n.干涉仪
spaceship
n.太空船(space shuttle)
revolve
v.(使)旋转
The earth revolves around the sun. / Their troubles revolve around money management.
地球围绕太阳转。/他们的烦恼集中在金钱管理上。