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We're talking pretty big numbers here... And an interesting idea about what it'd be like traveling in a Googolplex-sized Universe!

With Antonio (T...

We're pointing the telescopes towards the open cluster, M34. And okay, Nik doesn't really like imaging open clusters!

In this video: Roy Gretton, ...

Richard Feynman on the rational scientific method; increments and revolutions and castling.

http://www.ted.com Erik Johansson creates realistic photos of impossible scenes -- capturing ideas, not moments. In this witty how-to, the Photosho...

The latest episode of Cosmic Journeys, enjoy in full HD 1080p. Scientists have been reconstructing the history of the moon by scouring its surface,...

With all this talk about "sigma" and certainty at the Large Hadron Collider, we attempt to explain what it's all about.

Visit our website at http:...

7 is an example of a happy number, as opposed to sad numbers. What makes a number happy?

Dr Ria Symonds is from the University of Nottingham.

Web...

Why the abstraction of mathematics is so fundamental

The Sagittarius Star Cloud is M24 in the famed Messier catalogue - but can you really call it an object? Professor Mike Merrifield is an astronomer...

BBC Horizon 1993

Richard Feynman - No Ordinary Genius

(full version)

The NFC's streak of 14 Super Bowl coin toss wins has come to an end... And they aren't likely to do it again for another 32,766 years.

Dr James Gr...

We're watching the star Wasp-33 as a giant, fast-moving planet moves across its stellar disc. The extrasolar transit is being recorded by Liam Hard...

Coming soon to "Cosmic Journeys." Earth, over its 4.5 billion year history, has been pummeled by asteroids, eroded by wind and rain, covered over w...

great riffs

Is 1 a prime number? Apparently not. Dr James Grime explains.

Website: http://www.numberphile.com/

Numberphile on Facebook: http://www.facebook.co...

The fraction three quarters has a particular interest to biologists because of its link to the research of Max Kleiber and metabolic rates in anima...

We're discussing two bits of research here - Meghan is discussing the an epic halo of hydrogen and Mike is explaining an apparent lack of dark matt...

It's a concept which intrigues mathematicians, but scientists aren't so keen on it. More at http://www.sixtysymbols.com/

Black holes and sunsets are on the agenda in this latest batch of viewer questions.

More questions and answers from Sixty Symbols at http://www.s...

They are fundamental building blocks of the universe - but quarks were nearly called "aces" or "partons". More physics at http://www.sixtysymbols.com/

Yes, it has a funny name. But its name is not the only odd thing about Uranus. All our physics and astronomy videos at http://www.sixtysymbols.com/

Finnish:

Nuapurista kuulu se polokan tahti

jalakani pohjii kutkutti.

Ievan äiti se tyttöösä vahti

vaan kyllähän Ieva sen jutkutti,

sillä ei meitä s...

The square root of two is a fascinating number with a long and sordid history. It also forms the basis of most office paper, such as A4, A3, etc.

...

The Mars rover Opportunity was supposed to last three months. It's now going on Nine Years. It's proved so durable that in 2011 it was essentially ...

I doubt many religious people could stomach a taste of their own medicine. I've known people who got fired when it was discovered that they were an...

17 is the minimum number of clues required to give a unique sudoku solution - but how did mathematicians prove this?

Dr James Grime discusses a re...

We're in the backyard with Roy for Brady's first real-life "eyeballing" of a Messier object. M15 is a globular cluster of stars. But what is happen...

A visit to the toilet is included in Professor Phil Moriarty's explanation of 3D glasses. How do 3D films give us that three dimensional effect?

V...

Take a breathtaking journey into the future, five billion years from now, to see the ultimate fate of the Solar System. This gem from HubbleCast sh...

The Crab Nebula - M1 in the Messier Catalogue - is a supernova remnant with an important pulsar at its centre. Here we look at it through Nik Szyma...

In a newly-released audio recording, the Italian coast guard appears to order the captain of the Costa Concordia to return to the capsized ship and...

What SOPA and PIPA are at face value and what they could end up enabling

Why is "f" a number to people who work with computers? More about binary in our "Pac-Man" video at http://www.youtube.com/watc...

This...

Onboard cameras capture the amazing journey of Atlantis into space, and the dramatic return of the solid rocket boosters.

Early in the morning

From EsoCast, Dr. J. explores the upheaval in our understanding of the universe brought on by the discovery that the universe is not just expanding...

Apple employees share a personal message for the It Gets Better Project.

If you are considering suicide or need help, call the Trevor Project now:...

http://www.ted.com We have no ways to directly observe molecules and what they do -- Drew Berry wants to change that. At TEDxSydney he shows his sc...

Can the entire universe be explained with a single, unifying theory? This is perhaps the most fundamental question in all of science, and it may a...

Perfect and nice moon walk.

31 is one of the special Mersenne Prime numbers. They are related to perfect numbers. See our perfect number video at http://www.youtube.com/watch?...

http://www.ted.com Sebastian Wernicke thinks every TEDTalk can be summarized in six words. At TEDxZurich, he shows how to do just that -- and less....

http://www.ted.com Paddy Ashdown claims that we are living in a moment in history where power is changing in ways it never has before. In a spellbi...

We use 153 as an example of a narcissistic number. Video features Dr Ria Symonds from the University of Nottingham.

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For once it's actually the "It's not what it looks like" excuse is actually the truth. Innocent men looking for a new shirt get more than they barg...

Richard Feynman compares Science to Mystic Answers

http://www.ted.com "If I should have a daughter, instead of Mom, she's gonna call me Point B ... " began spoken word poet Sarah Kay, in a talk that...