6 Preguntas sobre El Espacio

The video covers various topics related to space and astronomy. It begins by explaining the atmosphere and the boundary of space known as the Kármán line. It then discusses why planets orbit the Sun, touching on gravity and the formation of the solar system. The video also explains the phenomena of lunar and solar eclipses, the vast number of stars in the universe, and the concept of cold welding in space. Finally, it provides insights into what it takes to become an astronaut.

How many stars are estimated to be in the universe and what is the method of estimation?

Define what an astronaut is and what qualifications are needed to become one.