Why bring an asteroid closer to Earth? Don't we want to push them away? Both goals are considered by Lou Friedman, Tom Jones, John Lewis, Bill Nye, and Rusty Schweikart in highlights of a recent public discussion. Move over James Bond. Emily Lakdawalla busts some secrets about planetary science and so-called embargoes. Bruce Betts and Mat Kaplan have no secrets except the new space trivia contest answer in their What's Up segment.