Understanding Big Bang Nucleosynthesis: 100 Seconds After the Universe Began
Discover what happened 100 seconds after the Big Bang and how it led to the formation of the first atomic nuclei.
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100 seconds after the universe began, the temperature had dropped sufficiently for protons and neutrons to begin forming the first simple nuclei, a process known as Big Bang nucleosynthesis. This led to the creation of hydrogen, helium, and small amounts of lithium. This period marked the foundation for the development of matter that would later form stars and galaxies.
FAQs & Answers
- What is Big Bang nucleosynthesis? Big Bang nucleosynthesis refers to the process that occurred within the first few minutes of the universe, leading to the formation of light elements.
- How did the first atomic nuclei form? The first atomic nuclei formed as the universe cooled, allowing protons and neutrons to combine, primarily resulting in hydrogen and helium.
- Why is the temperature critical for nuclei formation? A drop in temperature allowed for protons and neutrons to bond and create nuclei, which is essential for subsequent formation of stars and galaxies.
- What elements were created during Big Bang nucleosynthesis? During Big Bang nucleosynthesis, hydrogen, helium, and trace amounts of lithium were produced.