![Why did the Universe start off with Hydrogen, Helium, and not much else? | by Ethan Siegel | Starts With A Bang! | Medium Why did the Universe start off with Hydrogen, Helium, and not much else? | by Ethan Siegel | Starts With A Bang! | Medium](https://miro.medium.com/v2/resize:fit:1162/1*vwMI6ggQjIdNJ2SYvOBfJw.jpeg)
Why did the Universe start off with Hydrogen, Helium, and not much else? | by Ethan Siegel | Starts With A Bang! | Medium
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The Fusion of Hydrogen into Helium in the Core of a Star, Bringing it To Life Stock Illustration - Illustration of helium, astronomy: 274284840
![The Fusion of Hydrogen into Helium in the Core of a Star, Bringing it To Life Stock Illustration - Illustration of power, nuclear: 274284843 The Fusion of Hydrogen into Helium in the Core of a Star, Bringing it To Life Stock Illustration - Illustration of power, nuclear: 274284843](https://thumbs.dreamstime.com/z/fusion-hydrogen-helium-core-star-bringing-to-life-created-generative-ai-274284843.jpg)
The Fusion of Hydrogen into Helium in the Core of a Star, Bringing it To Life Stock Illustration - Illustration of power, nuclear: 274284843
![The Sun generates its energy by nuclear fusion of hydrogen nuclei into helium The proton-proton chain dominates in stars The Hydrogen Bomb:: tasmeemME.com The Sun generates its energy by nuclear fusion of hydrogen nuclei into helium The proton-proton chain dominates in stars The Hydrogen Bomb:: tasmeemME.com](https://images.assetsdelivery.com/compings_v2/designua/designua1304/designua130400013.jpg)
The Sun generates its energy by nuclear fusion of hydrogen nuclei into helium The proton-proton chain dominates in stars The Hydrogen Bomb:: tasmeemME.com
![Nuclear fusion powers the Sun. It fuses hydrogen atoms into helium atoms. All the necessary component for the reaction to happen is in the Sun, and the reaction doesn't require matters from Nuclear fusion powers the Sun. It fuses hydrogen atoms into helium atoms. All the necessary component for the reaction to happen is in the Sun, and the reaction doesn't require matters from](https://i.redd.it/pizwoecei7u51.jpg)
Nuclear fusion powers the Sun. It fuses hydrogen atoms into helium atoms. All the necessary component for the reaction to happen is in the Sun, and the reaction doesn't require matters from
![The Fusion of Hydrogen into Helium in the Core of a Star, Bringing it To Life Stock Illustration - Illustration of power, nuclear: 274284843 The Fusion of Hydrogen into Helium in the Core of a Star, Bringing it To Life Stock Illustration - Illustration of power, nuclear: 274284843](https://thumbs.dreamstime.com/b/fusion-hydrogen-helium-core-star-bringing-to-life-created-generative-ai-274284843.jpg)