High flyer listens for neutrinos' pings

 作者:恽襟     |      日期:2019-03-15 07:07:00
By Zeeya Merali At 13.40 on 15 December, a giant balloon carrying an equally gigantic payload lifted off from McMurdo station in Antarctica. Steve Barwick was glad to see it go. Maybe ’twas the season, but the device he had spent two years building had begun to remind him of a Christmas tree. However, the adornments on this 6-metre-tall hulk are radio antennas rather than baubles. And far from being decorative, this device is now turning the ice continent into the world’s biggest particle detector. Barwick, of the University of California, Irvine,