The Evidence for Modern Physics: How We Know What We Know Season 1 Episode 17 How We Know the Universe Began with a Bang

The Evidence for Modern Physics: How We Know What We Know is a fascinating scientific series that explores the breakthroughs and discoveries that have shaped our understanding of the universe. In season 1, episode 17, titled "How We Know the Universe Began with a Bang," viewers are taken on a journey through the history of the universe, from its explosive origins to the present day.

The episode begins with a discussion of the Big Bang theory, which proposes that the universe began in a single, explosive event around 13.8 billion years ago. Viewers are introduced to the evidence that supports this theory, including the discovery of cosmic microwave background radiation, which is an afterglow of the Big Bang that still fills the universe today.

Throughout the episode, viewers are introduced to some of the most important scientists working in the field of cosmology, including Georges Lemaître, Edwin Hubble, and Alan Guth. The show explores how these scientists made important discoveries that helped to confirm the Big Bang theory, and how their work has shaped our understanding of the universe.

One of the key pieces of evidence for the Big Bang theory is the observed redshift of distant galaxies. This redshift is caused by the expansion of the universe, and is a direct result of the initial explosion that began the universe. Viewers learn about how astronomers have used this evidence to create a detailed timeline of the universe, from its earliest moments to the present day.

The episode also explores some of the mysteries that still surround the Big Bang, including what caused the initial explosion and what existed before the universe was created. Viewers are introduced to some of the most popular theories that attempt to answer these questions, including the theory of cosmic inflation.

Ultimately, "How We Know the Universe Began with a Bang" is a fascinating look at one of the most important moments in the history of the universe. Through its exploration of the evidence and scientific discoveries that support the Big Bang theory, the episode offers viewers a deeper understanding of the universe and our place within it.