3min chapter

In Our Time: Science cover image

The Proton

In Our Time: Science

CHAPTER

The Role of Protons in the Sun

Is what we think of now as fundamental, truly fundamental? I'd like to think not but we have to keep looking. Let's go back to the beginning, back to Anana second after the big bang and then back to the sun. Come on Frank, you're the man for this. What's the role of the proton in the sun? Well, the sun came a long time after the big Bang. But protons came quite soon after the bigbang, about a second or so. So protons were the first of the now existing particles if you like that emerged out of the big bang - they are stable. And so protons have been around ever since then.

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