Have you seen it? OK Go has gone where no band has gone before to make a music video. Mat talks with Damian Kulash and Tim Nordwind about the hazards, thrill and promise of making art in free fall. Emily Lakdawalla reveals another attempt to put a microphone on Mars. Bill Nye steps aside so that Casey Dreier can give us his first impression of the new budget proposed for NASA. And Mat drops in on Bruce’s live, online astronomy class to learn What’s Up.