1. Is it true that when the orbital plane of planets about a star is perpendicular to our line of sight, that we will not detect the star wobble they may cause? 2. How many degrees from perpendicular is star wobble is detectible? For this question, I will accept an answer based on currently detected extrasolar planets but I’m really looking for a theoretical answer. 3. Is it believed that the orbital plane of planets about a star can take on any orientation with respect to our line of sight, and no one has detected a favored orientation in our galaxy? I’m aware of research on other methods of detecting extrasolar planets which may favor a perpendicular orientation of orbiting planets. I’ve been keeping up with the current detection efforts and successes. I learned that we may soon (within the next 10 years) have the technology to detect earth sized planets. I read a planet as small as 14 earth masses has been found around Mu Arae and another of the same mass around 55 Cancri. I’m trying to establish the likelihood of not detecting extrasolar planets that may support life about nearby sun like stars during the next 25 years. When would you guess that the first life supporting extrasolar planet will be found? I haven’t a clue!