Understanding the Scale of the Observable Universe

The video explains the vastness of the observable universe, which is 93 billion light years across, by comparing it to the size of Earth. It uses a creative analogy involving pixels in a video to help visualize this immense scale. The Earth is represented as a tiny white pixel, while the entire string of pixels represents a fraction of the universe's diameter.

How wide is the observable universe?

• 93 billion light years

• 93 million light years

• 93 quadrillion light years

• 93 trillion light years

How many times larger is the observable universe compared to Earth?

• 10 quintillion times

• 50 quintillion times

• 100 quintillion times

• 200 quintillion times

In the pixel analogy, what does the single white pixel represent?

• The solar system

• The Milky Way galaxy

• The observable universe

• The Earth

What does the string of all pixels together represent in the analogy?

• The size of the Milky Way

• The entire universe

• The distance to the nearest star

• One tenth of the observable universe's diameter

What is the purpose of shrinking the pixel rows in the analogy?

• To show the size of a galaxy

• To illustrate the vastness of the universe

• To compare different planets

• To measure the speed of light