The Universe Season 3 Episode 12 Edge of Space

The Universe season 3 episode 12 titled "Edge of Space" explores the remarkable phenomenon that exists on the outskirts of our atmosphere. The show discusses how the Earth's atmosphere plays a crucial role in shaping life on our planet and how its boundaries extend far beyond what we can see.

In this episode, viewers will learn about the exosphere, which is the region where the Earth's atmosphere gradually merges into space. This region of space is unique because it lacks what we would typically associate with an atmosphere, such as air molecules and pressure. Despite this, there are still particles and energy present in the exosphere, and they contribute to the functioning of our planet.

The show also highlights how the exosphere acts as a buffer to protect us from the onslaught of radiation and particles from the sun and beyond. It also talks about how the exosphere allows for the formation of auroras, which are spectacular light displays that occur when charged particles from the sun interact with the Earth's magnetic field.

Throughout the episode, viewers will also learn about the different types of satellites that orbit the Earth, and how they are used for a variety of purposes, including mapping our planet, monitoring the weather, and even providing a platform for space exploration.

One of the most fascinating aspects of the episode is the discussion about the Kármán line, which is the imaginary boundary that separates the Earth's atmosphere from space. While this may seem like a straightforward concept, defining the exact location of the Kármán line has been a topic of debate for years. The episode explores different perspectives on the matter and illustrates how the answer may depend on how you choose to define "space."

Lastly, "Edge of Space" touches on the concept of space tourism and the potential for humans to experience the exosphere firsthand. It discusses the challenges that must be addressed to make space tourism a reality and the potential impact of space flight on our planet.

Overall, "Edge of Space" is a captivating episode that delves into the mysterious and mesmerizing realm beyond our atmosphere. It is an excellent reminder of the intricate interplay between our planet and the vast expanse of space that surrounds us.