Apocalyptic Year Tunisian astrologist predicts the assassination of Bush, etc

No, they don't.
Astronomy is the scienctific study of palnets, stars, glaxies etc .
Astrology is not.

[LalaMimi]

they are similar when such use the same study...

Astronomers have their theories about how the celestial bodies, their positions and their gravitational force can influence a difference in nature of such things like climate change, water, the oceans and gravity etc.. Astrology goes further and concludes that the same applies to human beings and natural occurrences..