for a small NASA advisory working group to study and develop future outer solar system missions and she served as the Vice Chairperson of the Steering Group for the first Solar System Decadal Survey, sponsored by NASA and the National Academy of Sciences. Public speaking Porco speaks frequently on the Cassini mission and planetary exploration in general, and has appeared at renowned conferences such as PopTech 2005 and TED (2007, 2009). She attended and was a speaker at the Beyond Belief symposium in November 2006. Porco's 2007 TED talk, "The Human Journey," detailed two major areas of discovery made by the Cassini mission: the exploration of the Saturnian moons Titan and Enceladus. In her introductory remarks, Porco explained: In describing the environment of Titan, with its molecular nitrogen atmosphere suffused with organic compounds, Porco invited her audience to imagine the scene on the moon's surface: After describing various features discovered on Titan by Cassini, and presenting the historic first photograph of Titan's surface by the Huygens lander, Porco went on to describe Enceladus and the jets of "fine icy particles" which erupt from the moon's southern pole: Porco's 2009 TED Talk was "Could a Saturn moon harbor life?". She was a speaker at the 2016 Reason Rally. Television and film Porco has been a regular CNN guest analyst and consultant on astronomy, has made many radio and television appearances explaining science to the lay audience, including appearances on the MacNeil/Lehrer Newshour, CBS's 60 Minutes, Peter Jennings's The Century, and TV documentaries on planetary exploration such as The Planets on the Discovery Channel and the BBC, A Traveler's Guide to the Planets on the National Geographic Channel, Horizon on the BBC, and a Nova Cassini special on PBS. For the 2003 A&E special on the Voyager mission entitled Cosmic Journey: The Voyager Interstellar Mission and Message, Porco appeared onscreen and also served as the show's science advisor and animation director. Porco served as an adviser for the 1997 film Contact, which was based on the 1987 novel of the same name by the well-known astronomer Carl Sagan. The actress Jodie Foster portrayed the heroine in the movie, and Sagan reportedly suggested that she use Porco as a real-life model to guide her performance. Porco was also an adviser on the 2009 film Star Trek. The scene in which the Enterprise comes out of warp drive into the atmosphere of Titan, and