The Clay Center and the Amateur Telescope Makers of Boston will host Family Night Under the Stars at Dexter Southfield School in Brookline on May 9, starting at 4:30PM.  The Observatory will be open 5-9PM.  Galileo will speak.  Amateur telescopes will be on display, along with a telescope clinic, R2D2, a Wookie, Segway rides, kite flying, model rockets, HAM radio demonstrations, NASA ambassadors, and other stuff.  Most events are free, but laser and planetarium shows will be $5 each.  Register online.