Seeing Through Our Galaxy

WISE2012-003-A-annotated-smThere’s a problem with our view of the night sky: beautiful though it is, we’re incapable of seeing with our own eyes what the Universe is like from an outsider’s perspective. No matter where we are, we’re stuck inside our own galaxy, with all its light-blocking and obscuring properties.
But there’s a trick to seeing through it: some wavelengths of light are more transparent to our galaxy’s material than others! And when we get there — when we view it — the rewards are incomparable, including what we learn about what’s there in our own Universe…
…Find out how we see through our galaxy, and discover the whole of the Universe! (Plus don’t miss the amazing visual reward at the end!)


John Bell and the Nature of the Quantum World

Reinhold A. Bertlmann
I present my encounter with John Bell at CERN, our collaboration and joint work in particle physics.
I also will recall our quantum debates and give my personal view on Bell’s fundamental work on quantum theory, in particular, on contextuality and nonlocality of quantum physics.
Some mathematical and geometric aspects of entanglement are discussed as influence of Bell’s Theorem.
Finally, I make some historical comments on the experimental side of Bell inequalities…
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Mysteries of matter at the LHC

Two years ago, the Higgs Boson was discovered by the ATLAS and CMS experiments. But how precisely does it fill its role as the last missing piece in the Standard Model of particle physics?
The Large Hadron Collider will restart in 2015 with almost double the collision energy to test just that. But even then, this theory only accounts for 5% of the Universe, and does not include gravity.Can the LHC shed light on the origin of dark matter? Why is gravity so much weaker than the other forces? Dr Pippa Wells explains how the LHC will explore these mysteries of matter.
Pippa Wells was the Inner Detector System Project Leader on the ATLAS Experiment at CERN. ATLAS is one of two general-purpose detectors at the Large Hadron Collider (LHC). It investigates a wide range of physics, from the search for the Higgs boson to extra dimensions and particles that could make up dark matter.

Physicists suggest new way to detect dark matter

Associate professor Chris Kouvaris from the University of Southern Denmark. Credit: University of Southern Denmark

Associate professor Chris Kouvaris from the University of Southern Denmark. Credit: University of Southern Denmark

For years physicists have been looking for the universe’s elusive dark matter, but so far no one has seen any trace of it. Maybe we are looking in the wrong place? Now physicists from University of Southern Denmark propose a new technique to detect dark matter.
The universe consists of atoms and particles – and a whole lot more that still needs to be detected. We can only speculate about the existence of this unknown matter and energy. Continue reading Physicists suggest new way to detect dark matter

Gravity may have saved the universe after the Big Bang

New research by a team of European physicists could explain why the universe did not collapse immediately after the Big Bang.

Studies of the Higgs particle – discovered at CERN in 2012 and responsible for giving mass to all particles – have suggested that the production of Higgs particles during the accelerating expansion of the very early universe (inflation) should have led to instability and collapse. Continue reading Gravity may have saved the universe after the Big Bang

2 new subatomic particles discovered at CERN

New baryons are six times more massive than protons
Scientists at the world’s largest particle collider said Wednesday they have discovered two new subatomic particles never seen before that could widen our understanding of the universe.

An experiment using the European Organization for Nuclear Research’s Large Hadron Collider found the new particles, which were predicted to exist, and are both baryons. Baryons are particles that are each made up of three tiny elementary particles called quarks. Neutrons and protons, the familiar particles that make up atoms, are also baryons.

In a statement Wednesday, officials at the lab known by its French acronym CERN announced the discovery, which could shed more light on how things work beyond the “Standard Model” physics theory explaining the basic building blocks of matter. The results also were submitted to the publication Physical Review Letters.

Summary of the paper on Arxiv

“Nature was kind and gave us two particles for the price of one,” said one of the CERN collaborators, Matthew Charles, of the CNRS’s LPNHE laboratory at Paris VI University. Continue reading 2 new subatomic particles discovered at CERN