The video explores the vastness of the universe, starting with a look at the night sky and focusing on a small section captured by the Hubble Space Telescope. This section, the size of a grain of rice, revealed over 3000 galaxies. The video discusses the scale of the universe, comparing the size of Earth and the Sun, and the number of stars in the Milky Way. It also covers the Extreme Deep Field (XDF) image, which shows 10,000 galaxies, highlighting the immense scale and complexity of the universe.

In the context of the universe, how small is Earth compared to the vast number of galaxies?

What can we infer about the number of stars in the Milky Way compared to the galaxies observed in the deep field image?