Press Conference4 Dec
By: Dorota Grejner-Brzezinska, professor of geodetic and geoinformation engineering, Ohio State University and Joseph Helmboldt, radio astronomy, Naval Research Laboratory

In the search for rogue nukes, researchers have discovered an unlikely tool: astronomical radio telescopes. Ohio State University researchers previously demonstrated another unlikely tool, when they showed that South Korean GPS stations detected telltale atmospheric disturbances from North Korea’s 2009 nuclear test. Both techniques were born out of the discovery that underground nuclear explosions leave their mark—on the outer reaches of Earth’s atmosphere.