Brian Greene: Is our universe the only universe?

Is there more than one universe? In this visually rich, action-packed talk, Brian Greene shows how the unanswered questions of physics (starting with a big one: What caused the Big Bang?) have led to the theory that our own universe is just one of many in the "multiverse."

Brian Greene is perhaps the best-known proponent of superstring theory, the idea that minuscule strands of energy vibrating in a higher dimensional space-time create every particle and force in the universe.

• Category

  Science & Technology

[Alex Donnelley]

This mans passion for understanding simplifying and explaining the works of his field is inspiration for future generations. If only people could someday begin again to have everyday discussions in this manner about the ideologies of life and existence instead of focusing on all the distractions we would be able to progress so much more successfully.

[Barbara Becquiot]

Interesting to discover that Brian and I both have four year old Sophias, though mine is my grandaughter. A multiverse of four year old Sophias. Magical.

[Jorge Alejandre]

What if our universe already collided with another universe to have so much dark energy

[nowucmenowu0000]

We don't understand or look after our own planet, what hope have we got with The Universe.

[Mike Williams]

Whats wrong with being 5'7'? im 5'7...

[shahlaturkzadeh]

If there was a big bang, then there was a first atom. And who created that first atom ?? Afraid to say God ?

[shahlaturkzadeh]

If the universe is infinite, there is another earth with you in it doing slightly different things (100,000,000,000,000,000,000,0­00,000 light years away)!! (Infinite possibilities).

[shahlaturkzadeh]

Tell me where u live u little bitch,keyboard hero. youre probably 5'7' and dont get pussy.

[rjdaredevil]

Your name explains where you come from and how illiterate you can be.. You came out of a pile of sh!t.. and will remain one..

Cheers!!

[azhari hanafi]

then where the eleventh dimension?