As the other day we went to NASA and we learned about planets and stars, I wanted to upload this video that compares the sizes of planets in our solar system and some stars. It's amazing to think of how little we actually are compared to what is out there!
Enjoy it!
Hello Macarena I found a video about the reflection and refraction:http://www.youtube.com/watch?v=_MVvkc0mHC4
ResponderEliminarPepe
Thank you so much, Pepe, I'll post it in the main page so that everyone can watch it! Very interesting!
Eliminar