We've seen helium baked off a rocky exoplanet's atmosphere

> 天文学家观测到氦从一颗岩石系外行星的大气层中逃逸。

作者: John Timmer | 分类: Science, astronomy, exoplanets, Helium | 原文: arstechnica.com

时间: Thu, 16 Jul 2026 18:00:15 +0000

Most of the gas in the Universe is a mixture of hydrogen and helium.

> 宇宙中大部分气体是氢和氦的混合物。

It's thought that the initial atmospheres of most planets also start out that way.

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