In the 1940s and 50s, Russian-American physicist George Gamow, developed a theory of the early universe that explained, among other things, why so many light elements, like hydrogen and helium, were observed throughout the cosmos.

在 1940 年代和 50 年代， 俄裔美国物理学家乔治·伽莫夫 (George Gamow) 发展了一种早期宇宙理论，除其他外，该理论解释了为什么在整个宇宙中观察到如此多的轻元素， 如氢和氦。