Framingham State University’s Christa McAuliffe Center seeks presenters and volunteers for the second annual Science on State Street festival on April 27, 11AM-3PM, on its campus (directions).  It’s free and open to all ages, with over 50 hands-on activities (in biology, chemistry, physics, food science, robotics and engineering), featured presentations by FSU faculty and invited scientists, conversations and performances that explore the interaction between science and the arts, and lots of free planetarium programs. The keynote talk, at 2PM by Dr. Jonathan McDowell from the Smithsonian Astrophysical Observatory, will be on the Moon Race: The U.S.-Soviet Competition to Put a Man on the Moon. The event coincides with Framingham’s Earth Day Festival nearby on the Framingham Centre Common.