This year's Technology Day, June 7, taps into the fundamental human fascination with the universe. In "Out of This World," faculty will explore the cosmos, human efforts to probe deeper into space, and human-machine interactions here on Earth. Physics professor Max Tegmark will discuss his work on precision cosmology; aeronautics and astronautics professor Dava Newman will comment on the challenges of sending humans to Mars; and Media Lab professor Cynthia Breazeal will explore the world of humanoid robots. Learn more: alum.mit.edu/ne/reunions/techday.html.