GHOSTLY AURORAS: A solar wind stream is buffeting Earth's magnetosphere and producing some lovely auroras. Regard the sky hours ago over Kiruna, Sweden:"This photo was taken by an all-sky camera at the Swedish Institute of Space Physics," says Spaceweather reader Yann. "It could easily get lost in the camera's huge archive updated automatically every minute. But this one is too special to go unpublished--a real ghostly aurora!"