Carl Sagan - " a Glorius Dawn" featuring Stephen Hawking

[Gryper]

3 more new Symphony of Science videos!

//youtu.be/0qGTjIcVDAU&NR

//youtu.be/DZGINaRUEkU

//youtu.be/GITb6rzpTWM

[Gryper]

//youtu.be/akek6cFRZfY