Astronomy Picture of the Day——北半球冬季天空的交响乐

Discover the cosmos! Each day a differentimage or photograph of our fascinating universe is featured, along with a briefexplanation written by a professional astronomer.

A Symphony in Northern Winter Skies

Image Credit & Copyright: LorenzoRanieri Tenti

Explanation: Despite the cold, a chance toview the shimmering northern lights coaxed this skygazer onto the frozensurface of Lake Superior on the west coast of the Keweenaw Peninsula andoffered this nocturnal crescendo as a reward. A northern late winter night skyalso plays across the panoramic composition of images made between 10pm and 1amon the night of February 28/March 1. At left, a faint band of Zodiacal lightrises sharply from the horizon crossing Mars and the Pleides star cluster. Boththe distant galaxy M31 and our own Milky Way shine above the greenish auroralarc. Navigational north pole star Polaris is centered above and accompanied onthe right by the northern night's most recognizable asterism, the Big Dipper.Terrestrial lights include markers for two breakwaters on the the horizon nearthe center of the scene.

北半球冬季天空的交响乐

说明：尽管天气非常冷，但还是有机会看到闪闪发光的北极光，这位天文观测者被哄上了凯威诺半岛西海岸上游湖的冰冻表面，我们把这幅夜空美景作为奖励送给他。

这幅拍摄于2月28日晚上10点至3月1日凌晨1点间的全景照片中，还可看到北半球冬末的夜空景象。在照片左侧，一道黯淡的黄道光带穿过火星和昴宿星团、从地平线上快速升起。遥远的星系M31和我们的银河系都在绿色的极光光弧上方闪耀。用来导航的北极星位于照片中心正上方，其右侧是北半球夜空中最易辨识的星群——北斗七星。陆地上的灯光包括了位于照片中心附近远处地平线上两个防浪堤的警示灯。

参考文献：

https://apod.nasa.gov/apod/image/1903/HoughtonAurora_03_2019.jpg