Cosmobiology is a method of astrology developed by Reinhold Ebertin in the 1920's. Half of 90 is 45, so the midpoint would be located at 15 degrees Taurus. In fact, it is common to use all indirect midpoints at 45 or even 22.5 degree intervals.
Indirect midpoints carry nearly the same energy as a direct midpoint.
Cosmobiologists, like other astrologers, are consulted for advice in personal and business matters, assisting in medical diagnoses, and in matters regarding fertility . There are several reasons for the popularity of pseudosciences such as cosmobiology. The pragmatic fallacy is often committed in such matters because of the relative ease with which one can fit just about any piece of data to the theory. Analogies and metaphors are easy to see and are used to validate predictions. Finally, there is no way to disprove such theories.