La serie Cosmos de Carl Sagan (sólo falta el capítulo 4)

https://www.youtube.com/watch?v=RTPOgZPyWAs

https://www.youtube.com/watch?v=Yyvb2CCM_ug

https://www.youtube.com/watch?v=G7LjT4BHoZk

https://www.youtube.com/watch?v=foPgmdPBsII

https://www.youtube.com/watch?v=iasj49H53M4

https://www.youtube.com/watch?v=mvrgqk9scBo

https://www.youtube.com/watch?v=IWSW6poRLrk

https://www.youtube.com/watch?v=j6EDMGEQrac

https://www.youtube.com/watch?v=IiEop0hD5Qk