正在加载视频...
视频加载失败
A supernova explosion in the galaxy NGC 2442 This distant explosion occurred approximately 60 million years ago, around the time the dinosaurs on Earth were going extinct. The dying star's luminosity was billions of times greater than that of our Sun and comparable to the entire center of the... show more
0 条评论
暂无评论
原始帖子的评论将显示在这里
