If a boy has ketu and Saturn in Libra and the girl has Mars in Libra..are they not compatible

Can Astrology tell the destiny of a person?

I many times have dreams about seeing washrooms or about shitting, cleaning or brushing teeth, having obstracles to go to bathroom for shitting or toilet, what all these mean? I am looking for some individual meanings. Also gods and godesses ...

Why do we require only blue stone shivling or shivling which is blue in colour? What is its significance? Why can’t we use parad or sphatik shivling for this vidhi?

If Mars in 4th house ie nature house of Rahu , then can a prediction be that native will undergo chest surgery?