The Intergalactic Krewe of Chewbacchus and Giorgio A. Tsoukalos, the star of History Channel's Ancient Aliens and publisher of Legendary Times Magazine, host the party counting down to the end of the Mayan calendar. Ghostland Observatory, Alex McMurray and the Interstellar All-Stars, Quintron and Miss Pussycat, Hot 8 Brass Band and others perform. Visit www.cosmicfestnola.com for details. Admission $55 in advance, $65 at the door. Noon.