Some strange radio signals are broadcasting out of antarctic ice, and the researchers who found them don't know why. Using a very cool-sounding tool called a cosmic particle detector, researchers at the University of Pennsylvania unearthed strange signals that appear to be coming from the ice. Those signals, according to a Penn press release, "defy the current understanding of particle physics." The particle detector that found those strange signals — which is, to make it even more charming, mounted on a bunch of balloons — belongs to a range of instruments known as the Antarctic Impulsive Transient Antenna (ANITA). That […]