Get an exclusive look inside receivers and marvel at the precise engineering required to collect the Universe’s faintest signals. A Green Bank Observatory engineer will pull back the curtain on the Green Bank Observatory’s site labs and control room as you see what makes Green Bank Observatory one of the world’s leading radio facilities. Federal regulations require pre-screening for attendees age 18 and up. For more information on the pre-screening process, visit the website link below. High Tech Tours fall on select Thursdays from 3:30-4:30 p.m.; $15/person, 15 participants max.; No photography of any kind is permitted. Reservations and screening require 48 hours in advance.