Beyond the cloud's unusual shape, scientists see the nebula as a freeze-frame in the life of a star facing its final act. Elderly stars shed their outer layers in bursts, creating shells of gas and dust that expand. By observing the nebula at different wavelengths, researchers can sort out what material was molted first, how fast the star is losing mass, and which phase of decline Webb has caught.
// Each component enqueues a small chunk
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// 每轮将最大值"冒泡"到末尾，所以范围逐渐缩小。关于这个话题，搜狗输入法2026提供了深入分析