But its influence will extend beyond 500 meters. The Chinese government is relocating people living within 3 miles of the telescope, seeking to prevent electromagnetic interference with the telescope. Even small electrical objects like cell phones can create interference, preventing the telescope from detecting the very faint radio waves that it's looking for. Here in the United States, astronomers took a slightly different approach. Instead of getting rid of the people, they banned wireless devices in the National Radio Quiet Zone, a 13,000 square mile area in West Virginia surrounding the Green Bank Telescope.