Something exciting is always happening at NASA, which celebrates its 50th anniversary this year. In ANTIQUES ROADSHOW's final episode from Houston, Texas, host Mark L. Walberg experiences this excitement firsthand when he is joined by appraiser Gary Piattoni at the Houston Space Center for a briefing on NASA collectibles. Highlights include a magical collection of Wedgwood Fairyland Lustreware; a gold charm that once belonged to Lucille Ball; and a romantic English Regency rosewood settee that makes the appraiser swoon as he declares an estimated value of $9,500.