Escalas del universo
Author: Andres Lopez Astudillo
http://www.youtube.com/watch?v=Cyasy54wDQc
http://www.youtube.com/watch?v=hX-hwFtAcOw
ESCALAS
http://www.youtube.com/watch?v=mVtt5LwzafY
http://www.youtube.com/watch?v=RN-9w9yY7WE
DIMENSIONES
http://www.youtube.com/watch?v=LdXEUfrxMzE
MUNDO EN DOS DIMENSIONES
http://www.youtube.com/watch?v=TD0MgbQSS3k&playnext=1&list=PL61782A79C1E0DD7D&feature=results_main