# Astronomy

## Solar system

* [Why the sun's atmosphere is hundreds of times hotter than its surface](https://phys.org/news/2021-05-sun-atmosphere-hundreds-hotter-surface.html)

## Videos

* [Viaje al centro de un agujero negro](https://www.youtube.com/watch?v=3pAnRKD4raY\&feature=youtu.be)