Intended as a "holiday for space," the annual event Countdown to Yuri's Night celebrates the world's first manned space flight by Russian cosmonaut Yuri Gagarin in the most non-scientific of ways: through a zany night of visual art, performance and music. Among the festivities: an art/science exhibit of local contemporary artists at Artisphere's Mezz Gallery focused on "retro-future visions of space"; the stage show "The Wrath of Shock-a-Khan,” featuring drag queen Lucrezia Blozia as Shock-a-Khan, burlesque stars from D.C. and New York, and music by surf-rockers Atomic Mosquitos; and a "lunar" dance party following a performance by the local jazzy-ska band Eastern Standard Time. The atmosphere will be high all night with $5 Stoli drink specials. Saturday, April 14, at 8 p.m. Artisphere, 1101 Wilson Blvd. Arlington. Tickets are $30 at the door. Call 703-875-1100 or visit artisphere.com and c2yn.com.