这个星云显示出先被吹离的外壳，主要是氢，并且有一个结构更多、气体混合的内部云层。NIRCam 与 MIRI 都显示一条穿过中央、沿垂直方向延伸的暗带，呈现出左右半球的样子。Webb 的解析度显示，这条暗带可能与中央恒星的爆发或外流有关，而在星云顶部可见内部气体似乎正向外抛射。
这颗恒星最终会如何演化取决于质量，而目前尚未确定：若质量够大，将以超新星爆炸；若质量较小且类似太阳，则会抛离外层并留下白矮星核心。说明指出，白矮星通常只有地球大小，但质量可达其数十万倍，一茶匙的物质重量会超过一辆皮卡车，并且会在数十亿年中逐渐冷却；也指出太阳预计约在 10 billion years 后成为白矮星。ESA 为 Webb 提供了 Ariane 5 发射服务，并与合作伙伴提供了 NIRSpec 以及 50% 的 MIRI。
On 25 February 2026, the NASA/ESA/CSA James Webb Space Telescope released images of nebula PMR 1 (weic2605) using two instruments, NIRCam and MIRI, in near- and mid-infrared light. PMR 1 is described as a gas-and-dust nebula created by an aging star expelling its outer layers, with a transparent-skull appearance and a brain-like interior.
The nebula shows an outer shell blown off first, mostly hydrogen, and an inner cloud with more structure and mixed gases. Both NIRCam and MIRI show a dark lane running vertically through the middle, giving a left-and-right hemisphere appearance. Webb’s resolution indicates the lane could be linked to an outburst or outflow from the central star, and at the top of the nebula the inner gas appears to be ejected outward.
The star’s final outcome depends on mass, which is not yet determined: if massive enough, it will explode as a supernova; if less massive and Sun-like, it will shed layers and leave a white dwarf core. The notes state a white dwarf is usually Earth-size but hundreds of thousands of times more massive, that a teaspoon would weigh more than a pickup truck, and that it cools over billions of years; they also state the Sun is expected to become a white dwarf in about 10 billion years. ESA provided Ariane 5 launch service for Webb and provided NIRSpec plus 50% of MIRI with partners.