... A few thousand years ago astronomy started as the study of the motion of celestial bodies and has ever since developed into different specialities such as planetology, astrophysics, cosmology and so on. ...
... A few thousand years ago astronomy started as the study of the motion of celestial bodies and has ever since developed into different specialities such as planetology, astrophysics, cosmology and so on. ...
... A few thousand years ago astronomy started as the study of the motion of celestial bodies and has ever since developed into different specialities such as planetology, astrophysics, cosmology and so on. ...
... Cambridge University Press, 1989 . [CO] . An Introduction to Modern Astrophysics . B. W. Carroll, D. A. Ostlie . Addison-Wesley, 1996 . [SuW] . ...