Discover a whole new side of San Francisco's Exploratorium on Thursday nights. Step into a world of science, art, and human perception after dark. With over 650 hands-on exhibits, prepare to have your mind boggled. Grab your friends and a drink from the bar for a special adults-only experience. Explore unique guest speakers, great music, specialty films, and one-of-a-kind activities. Test your limits in a pitch-black dome and attempt to cross the fog bridge. Marvel at a huge oversized mirror and use a microscope to investigate developing eggs from zebrafish. Stamp your feet to create a miniature earthquake with the seismograph. Immerse yourself in amazing images made from shadows. It's a night of learning, playing, and expanding your mind at the Exploratorium. Are you brave enough to drink from a water fountain fashioned from an actual (unused) toilet?