仙女座星系方向的未预期云气
2023年1月17日 Unexpected Clouds Toward the Andromeda Galaxy Image Credit & Copyright: Yann Sainty & Marcel Drechsler Explanation: Why are there oxygen-emitting arcs near the direction of the Andromeda galaxy? No one is sure. The gas arcs, shown in blue, were discovered and first confirmed by amateur astronomers just last year. The two main origin hypo...