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.
刚刚返工，我就隐隐嗅到了手机圈的火药味——还有两天时间，三星就要召开 Galaxy Unpacked 全球发布会，亮出开年旗舰 S26 系列。
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Skip content and continue reading特朗普威脅已有貿易協定國家別「玩花樣」2026年2月24日
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10210-6