I'm writing a novel in the general category of science fiction, although it's set just a few years from now. I've gotten some good suggestions and information from members of this forum. There are a few questions that I feel require the help of a professional astrophysicist and an aeronautical engineer who might be willing to do a few calculations and spend some time answering my questions. So the general question is this. Do you have any suggestions about how to hook up with professionals in a field who would be willing to spend a little quality time in face to face consultation without charging? Thanks.