Hands-on science: The Muse Knoxville continues to celebrate April as “energy month” with hands-on energy-themed activities. The 10 a.m.-noon activities today explore how solar energy works. The Muse was formerly the East Tennessee Discovery Center; it’s at 516 N. Beaman St. in Chilhowee Park. Admission is $5 for adults, $4 for children ages 2 and older or senior citizens.