RUSSIAN AURORAS: Last night, the sun's magnetic field near Earth tipped south, opening a crack in Earth's magnetosphere and allowing solar wind to stream inside. Promptly, the skies over northern Russia turned green：
Aleksander Chernucho photographed the auroras from Mt. Khibiny in Russia's Kolyskia peninsula. "I used a Nikon D700 set to ISO 640 for this 6-second exposure," he says.
Another outbreak of Northern Lights is due on Feb. 13th or 14th when a solar wind stream flowing from a coronal hole is due to hit Earth. The coronal hole is not yet visible from Earth, but NASA's STEREO-B spacecraft can see it approaching over the sun's horizon. Stay tuned for updates.
转自SPACEWEATHER |
|
置顶卡
变色卡
千斤顶
显身卡
美极了
