How much do we know about the universe today and what is the legacy that Stephen Hawking has left to us. Dr. Christophe Galfard is a French author and physicist. As a scientist, he worked on black holes and the origin(s) of our universe with Professor Stephen Hawking, his Ph.D. supervisor, at Cambridge University, England. Nowadays, Dr. Galfard devotes his time to spreading scientific knowledge to the general public.

He has given talks in front of more than 700 000 people worldwide and written 6 books, including a children one with Stephen Hawking and his daughter, Lucy, called George’s Secret Key to the Universe. In 2017, he co-hosted a BBC2 prime time documentary about colonizing another planet. Dr. Galfard’s latest book, «The Universe in Your Hand», is a #1 International Bestseller translated in more than 20 languages. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx