PPPL is throwing open its doors and inviting everyone to come enjoy enjoy a free festival of science for the whole family on Saturday, June 1 from 9 a.m. to 4 p.m. The theme of the Open House is “hot plasmas, cool science,” and there will be something for everyone – from hands-on plasma activities for kids to NASA moon rocks. Best of all, visitors will get a rare opportunity to see the Laboratory’s NSTX-U fusion machine and other experiments.