The Search for Planet Nine | Masao Sako | TEDxPenn
17:59
Supermassive black holes: most powerful objects in the universe | Martin Gaskell | TEDxMeritAcademy
14:53
The Search for Planet 9 | Dr. Renu Malhotra | TEDxPortland
17:58
The Exploration and Colonization of Mars: Why Mars? Why Humans? | Dr. Joel Levine | TEDxRVA
19:16
Doing Math at the Speed of Light | Nader Engheta | TEDxPenn
15:01
Have you ever imagined how interstellar travel could work? | Ryan Weed | TEDxDanubia
17:05
The Origins and Evolution of Language | Michael Corballis | TEDxAuckland
16:06
Cosmology and the arrow of time: Sean Carroll at TEDxCaltech
14:22