Intended as a "holiday for space," the annual event 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. In addition to an art/science exhibit at Artisphere's Mezz Gallery, an adults-only party includes a "Star Trek meets The Love Boat" intergalactic variety show hosted by Kittie Glitter as Captain Ballcrusher; New York "Boylesque" star Tigger! alongside burlesque artists L'il Dutch, Candy Del Rio and Rev. Valentine; music by surf-rockers Atomic Mosquitos and the jazzy ska band Eastern Standard Time; a "lunar" dance party; even a reduced-gravity chamber, better known as a moonbounce. You must be 21 or older to attend. Saturday, April 9, at 8 p.m. Artisphere, 1101 Wilson Blvd., Arlington, Va. Tickets are $25 at the door. Call 703-875-1100 or visit artisphere.com.