TED-Ed: What is the universe made of? - Dennis Wildfogel

The video explains the formation of atoms and molecules, starting from the Big Bang, which created a universe filled with hydrogen and helium. Over time, gravity caused gas clouds to form stars, where nuclear fusion produced heavier elements. When stars explode as supernovas, they create even heavier elements and disperse them into space. This process led to the formation of our Sun and Earth, with Earth being composed mostly of heavier elements formed in stars. The video highlights the interconnectedness of all matter, as famously noted by astronomer Harlow Shapley.

What are molecules composed of?

What elements were present in the universe shortly after the Big Bang?

How did the first stars form according to the text?

What happens during a supernova explosion?

How are planets formed in relation to stars?