A faint outer bubble, made mostly of hydrogen, marks an earlier period of material sloughed off. Closer to the center, a more complex cloud of mixed gases forms the "brain" inside the shell. Webb's instruments also show more dust glowing in mid-infrared light, while the near-infrared view lets background stars and even distant galaxies shine through.
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Estonian PM: If Putin stops Russia's war in Ukraine, he falls
Nature, Published online: 26 February 2026; doi:10.1038/d41586-026-00158-y，更多细节参见搜狗输入法2026