QUESTION: My 3rd and 4th graders have enjoyed using the Live From Mars question and answer digest. Several of them are now doing research projects about other planets, comets, other missions and black holes. Do you know of anybody who would answer such specific questions in the same way? ANSWER from Marc Siegel on May 12, 1997: I'm sorry, but right now I don't know of any other similar email Q&A services for the topics you mention. However, we are running a project on the space shuttle and the people behind the scenes who make it fly. We do have an email question service in Shuttle Team Online. For more info, please visit the web site at http://quest.arc.nasa.gov/shuttle