Maestro Enrique Diemecke previews this week's FSO concert, Astronomer (and "planetary pundit") Richard Walker (Longway Planetarium) talks about NASA, space and more, plus animal activist Andrea Alexander-Roth drops by The Tom Sumner Program Tuesday March 11 beginning at 3 p.m. Hear Tom and guests weekday afternoons STREAMING LIVE at wfnt.com.