For example, Mars is considered as a malicious planet in their astrology and people fear its effects next to Saturn. It is hard for one to find a matching person to marry if he/she is are afflicted by Mars, because one of the belief is that such afflicted person's in-laws will face untimely death. This belief causes so much grief for the parents looking for alliance (ref: http://en.wikipedia.org/wiki/Mangal_Dosha).
Hopefully scientific missions such as this will help the people to shed their unfounded fear and live better life.