col·lo·qui·um (n.) 1. An informal meeting for the exchange of views. 2. An academic seminar on a broad field of study, usually led by a different lecturer at each meeting. The Free Dictionary CAFE Foundation President Dr. Brien Seeley spoke by invitation at the Sigma Series Colloquium at NASA Langley in Hampton, Virginia on May 4th. His talk had an illustrious heritage as part of the longest-running science colloquia in America, beginning 50 years ago with a presentation by Werner von Braun, and since then including talks by Carl Sagan, Alex Haley, Neil Armstrong and other notables. Dr. Seeley was interviewed by NASA public relations TV and a local news station. Although not used to being treated like a celebrity, he found …