The Lyman-α emission line of hydrogen should be absorbed and thus not seen from galaxies in the early Universe — and yet it is observed. Now detailed images from JWST coupled with magnetohydrodynamical simulations show that interactions between galaxies are facilitating the escape of this radiation.

中文翻译：

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星系合并可以解释早期宇宙中意外的氢排放

氢的莱曼-α发射线应该被吸收，因此在早期宇宙的星系中看不到——但它却被观测到了。现在，来自 JWST 的详细图像与磁流体动力学模拟相结合表明，星系之间的相互作用正在促进这种辐射的逃逸。