Crossable Wormholes?

How can we visualise a black hole? Are wormholes real or fantasy? Are wormholes physically plausible? All these answers in 14 minutes For more videos, subscribe to the YouTube channel :    / scienceclicen   And if you liked this video, you can share it on social networks ! To support me on Patreon :   / scienceclic   or on Tipeee : http://tipeee.com/ScienceClic Facebook Page :   / scienceclic   Twitter :   / scienceclic   Google+ : http://google.com/+ScienceClic Alessandro Roussel, For more info: http://www.alessandroroussel.com/en _ To learn more : https://en.wikipedia.org/wiki/Wormhole https://en.wikipedia.org/wiki/Ellis_w...