How Big is the Universe?

The video explores the concept of the universe, emphasizing that it has no edge and is ever-expanding. It distinguishes between the observable universe and the entire universe, explaining that the observable universe is centered around the observer. The video clarifies misconceptions about the universe's expansion, stating that it is not expanding into something but rather stretching. The Big Bang is described not as an explosion but as a cosmological event where everything was evenly spaced. The possibility of an infinite universe is also discussed, with current data suggesting it might be infinite and expanding.

What is the observable universe and how does it relate to the concept of an edge?

Explain the analogy of the observable universe to an ocean. What does this analogy illustrate?

What does it mean when we say the universe is expanding? How is this different from the idea of expanding into something?

Describe the significance of the Big Bang in relation to the universe's structure and density.

Is the universe infinite? Discuss the current understanding based on available data.