What if the Earth were hollow?

Imagine that we dig a tunnel going from one side of our planet to the other side. What would happen with the body falling through that tunnel? Or what if the Earth were shell, with empty space inside. Would there be a gravity? Answers to those questions find in this video...

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Why are astronauts weightless in Space?

It would be hard to find a person who haven't saw on TV how astronauts float inside International Space Station orbiting around Earth. On question why is it so, answer would be "because they are weightless". But why are they weighless? The most common answer is "there is no gravity in space!". We bring you short video in which you can find right answer on this question...

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Hyper Earth: the New World in 4k

Our world, Earth, is changing before our eyes. Take a look on new HD images of Earth and watch how it changes. Incredible 4k supercomputer images of Earth brought to you on video...

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Standard Model of Elementary Particles

The Standard Model is the collection of theories that describe the smallest experimentally observed particles of matter and the interactions between energy and matter. Three categories of particles form the Standard Model. Matter is composed of quarks and leptons. 

The fundamental bosons provide three forces: electromagnetism, the strong nuclear force and the weak nuclear force. Gravity, the fourth fundamental force, is not explained by the Standard Model. 

The Higgs boson, discovered in 2012, provides an explanation for how the other particles get mass. The quark group includes six particles including: up, down, charm, strange, top and bottom. The lepton group includes the electron neutrino, muon neutrino, tau neutrino, electron, muon and Tau particles. The bosons include the photon, gluon, Z particle, W particle and the Higgs. 

 Currently, the Standard Model is incomplete and does not explain many important features of the known universe, such as: • gravity • dark matter (27 percent of the universe) • dark energy (68 percent of the universe)

Source:LiveScience

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Quantum levitation and quantum locking

Is levitation possible? Watch this video and make your own conclusion.

In a riveting demonstration, Boaz Almog shows how a phenomenon known as quantum locking allows a superconductor disk to float over a magnetic rail -- completely frictionlessly and with zero energy loss. You can see how a super-thin 3-inch disk levitate something 70,000 times its own weight.

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Is our Universe the only universe?

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

In this video Greene is showing how unanswered questions (What caused Big bang?....) have led to new theory that says that our Universe could be just one of many other universes, par of so called Multiverse.

Greene believes science must be brought to general audiences in new and compelling ways, such as his live stage odyssey, Icarus at the Edge of Time, with original orchestral score by Philip Glass, and the annual World Science Festival, which he co-founded in 2008 with journalist Tracy Day.

Brian Greene, a professor of physics and mathematics at Columbia University, has focused on unified theories for more than 25 years, and has written several best-selling and non-technical books on the subject including The Elegant Universe, a Pulitzer finalist, and The Fabric of the Cosmos—each of which has been adapted into a NOVA mini-series. His latest book, The Hidden Reality, explores the possibility that our universe is not the only universe.

Credits: TedTalks

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Beauty and truth in physics (Gell-Man)

We bring you short video from popular TED Talks project. Murray Gell-Mann brings visibility to a crucial aspect of our existence that we can't actually see: elemental particles. He won the Nobel Prize in Physics for introducing quarks, one of two fundamental ingredients for all matter in the universe.

Murray Gell-Mann is been called "the man with five brains" -- and he has the resume to prove it. In addition to being a Nobel laureate, he is an accomplished physicist who's earned numerous awards, medals and honorary degrees for his work with subatomic particles, including the groundbreaking theory that the nucleus of an atom comprises 100 or so fundamental building blocks called quarks. Gell-Mann's influence extends well beyond his field:

He's a member of the National Academy of Sciences, the American Academy of Arts and Sciences, and the Council on Foreign Relations. He also serves on the board of the Wildlife
Conservation Society and is a director of Encyclopedia Britannica. Gell-Mann, a professor emeritus of Caltech, now heads the evolution of human languages program at the Santa Fe Institute, which he cofounded in 1984. A prolific writer -- he's penned scores of academic papers and several books, including The Quark and the Jaguar -- Gell-Mann is also the subject of the popular science biography Strange Beauty: Murray Gell-Mann and the Revolution in 20th-Century Physics.

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