This is a common question many will ask or wonder. We know that we are made up of cells and to answer the second part of the question, some may reply that we are alone in the universe. And others may say we aren’t alone — aliens live amongst us.
The answer to the question, “Are we alone in the universe?”, is not as simple as it seems. First an understanding of what the human body is made up of and how the elements in our body work, helps to lay the foundation for understanding the bigger picture.
In the short explainer below, Kurzgesagt describes in less than seven minutes, what we are, how we evolved and how these elements in our body are connected to the universe.
H/T: SOAO Submissions