Let me see if I have this right The Maji follow a star that will lead them to a King.....and that is astronomy?????
From Bible History:
http://bible-history.com/isbe/M/MAGI,+THE/
"The Magi even in Herodotus' time had gained a reputation for "magic" articles (compare Acts 13:6,8). They also studied astrology and astronomy (rationes mundani motus et siderum (Amm. Marc., xxiii.6, 32)), partly learned from Babylon."
http://bible-history.com/smiths/M/Magi/
"It is with such men that, we have to think of Daniel and his fellow exiles as associated. The office which Daniel accepted Da 5:11 was probably rab-mag --chief of the Magi."
If the foregoing is true, does that make the "Book of Daniel" a book of astrology?