美国国家航空局北极光预报工具关机. NOAA northern lights forecast tool goes offline.

美国国家海洋局 (NOAA) 一种用于预测北极光可见度的工具已经关机, 使科学家们难以预测该现象何时会再次出现. A NOAA tool used to forecast northern lights visibility has gone offline, making it harder for scientists to predict when the phenomenon will appear again.