The Big Bang and the Birth of the Universe

Big Bang Overview:

• The universe began with the Big Bang, which is not an explosion, but an instantaneous expansion of space.

• Key Discoveries:

• Cosmic background radiation (1964) provided evidence supporting the Big Bang theory.

• Technological advancements, like the Hubble Telescope, improved our understanding of the universe's structure and expansion.

Expansion of the Universe:

• The universe expands into itself; it has no borders or "outside."

• The universe was initially extremely hot and dense, enabling energy to form particles quickly.

Formation of Matter:

• Gluons and quarks formed, with matter prevailing over antimatter at a ratio of 1,000,000,001 matter to 1,000,000,000 antimatter.

• Hadrons (like protons and neutrons) formed from quarks as the universe cooled.

Creation of Atoms:

• Approximately one second after the Big Bang, temperature decreased to allow hydrogen atoms to form.

• The universe resembled a hot soup filled with particles at around 10 billion degrees Celsius.

The Dark Age:

• A period with no visible light or stars; hydrogen gas clumped together due to gravity eventually forming stars and galaxies.

• Stars produced radiation that transformed hydrogen gas into a plasma, allowing visible light to emerge.