虽然夜空看上去安静而且亘古不变,但变化其实才是宇宙永恒的主题。在无尽的循环中,恒星会生老病死。恒星在死亡的过程中有时会向太空抛撒物质,会形成奇特而美丽的结构。这幅图像所显示的是在富集恒星背景之上的铅笔星云。它是南天船帆超新星遗迹中的一小部分。由于最亮的部分形似铅笔,因此而得名,但其整个结构看上去更像是一把女巫的扫帚。 Although the night sky looks quiet and remains unchanged, change is actually the eternal theme of the universe. In an endless loop, stars will die of illness and death. Stars sometimes scatter matter into space as they die, creating peculiar and beautiful structures. This image shows the pencil nebula above the star-rich background. It is a small part of the relics of the Nantou sailing supernova. Its brightest part is named after a pencil, but its entire structure looks more like a witch’s broom.