Ep 14. Cosmic Cannibals

In season 4 episode 14 of How The Universe Works, titled Cosmic Cannibals, scientists explore the fascinating phenomenon of galactic mergers. The episode delves into the idea that galaxies, even those that appear to be isolated in space, can collide and merge with one another, often resulting in the creation of new, larger galaxies.

The episode begins with a detailed look at the Milky Way, home to our solar system, which is itself on a collision course with the nearby Andromeda galaxy. Scientists predict that the merger of these two galaxies, which will take place in roughly four billion years, will result in a completely new formation that will be known as Milkomeda.

As the episode progresses, viewers learn about the many different types of galactic collisions that can occur. Some are relatively minor, with two small galaxies colliding and merging, while others involve massive galaxies colliding head-on and creating a spectacular explosion of stars and gas.

The episode also explores the ways in which scientists study these collisions. Using computer simulations and advanced telescopes, they are able to recreate the conditions of a galactic merger and study the resulting formations. This has led to many fascinating discoveries, such as the existence of dark matter, a mysterious substance that makes up a significant portion of the universe.

Throughout the episode, viewers are taken on a journey through space, exploring some of the most incredible and awe-inspiring sights in the universe. From the Andromeda galaxy to the Orion Nebula, the universe is full of incredible beauty and wonder.

But as scientists continue to study galactic collisions, they are also uncovering some of the darker aspects of the universe. In particular, the episode explores the idea of cosmic cannibalism, where larger galaxies consume smaller ones.

Viewers will learn about the ways in which these larger galaxies use their immense gravity to pull in smaller galaxies. They will also witness the incredible spectacle of a larger galaxy tearing apart a smaller one, as they merge to form a new, more massive object.

Despite the sometimes violent nature of these collisions, scientists also believe that they play an important role in the evolution of the universe. By bringing together vast amounts of matter, they create new stars and galaxies, leading to a richer and more diverse universe.

Overall, Cosmic Cannibals is a fascinating look at one of the most intriguing and mysterious aspects of the universe. Through stunning visuals and cutting-edge science, viewers will learn about the many ways in which galaxies collide, merge, and form new creations, helping us to better understand the universe around us.