Author: Enrique Gaztañaga, Professor at Institute of Cosmology and Gravitation (University of Portsmouth) Wormholes are often imagined as tunnels through space or time — shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In 1935, while studying the behaviour of particles in regions of […]
A lot of ink has been wasted in the last decades discussing whether string theory is a good description of nature or merely a mathematica construct with no connection at all with reality. However, the answer to this question actually lays at least in the middle of both options and for sure not any close […]
Author: Steven Gillespie, Senior Lecturer in Clinical Psychology, University of Liverpool Psychopaths might account for only about 1% of the general population, but they account for a disproportionate share of violent crime. Distinct from other conditions like sociopathy and antisocial personality disorder, psychopaths tend to show traits such as an absence of remorse or guilt […]
Author: Florian Neukart, Assistant professor of Physics, Leiden University Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and we die, in exactly that order. We plan our lives around time, measure […]
Author: Marika Taylor, Pro-vice-chancellor, Professor, University of Birmingham In 1980, Stephen Hawking gave his first lecture as Lucasian Professor at the University of Cambridge. The lecture was called “Is the end in sight for theoretical physics?” Hawking, who later became my PhD supervisor, predicted that a theory of everything – uniting the clashing branches of […]
Author: Florian Neukart, Assistant professor of Physics, Leiden University For more than a century, physics has been built on two great theories. Einstein’s general relativity explains gravity as the bending of space and time. Quantum mechanics governs the world of particles and fields. Both work brilliantly in their own domains. But put them together and […]
We’re often told it is “unscientific” or “meaningless” to ask what happened before the Big Bang. But a new paper by cosmologist Eugene Lim, of King’s College London, UK, and astrophysicists Katy Clough, of Queen Mary University of London, UK, and Josu Aurrekoetxea, at Oxford University, UK, proposes a way forward: using complex computer simulations […]
The universe is decaying much faster than thought. This is shown by calculations of three scientists on the so-called Hawking radiation. They calculate that the last stellar remnants take about 1078 years to perish. That is much shorter than the previously postulated 101100 years. The research by black hole expert Heino Falcke, quantum physicist Michael […]
Understanding the origin of heavy elements on the periodic table is one of the most challenging open problems in all physics. In the search for conditions suitable for these elements via “nucleosynthesis,” a Los Alamos National Laboratory-led team is going where no researchers have gone before: the gamma-ray burst jet and surrounding cocoon emerging from […]
Quantum simulation, a concept that once seemed like science fiction, is now revolutionizing the way physicists study the quantum world. The idea, famously suggested by Richard Feynman in the 1980s, is to use a controllable quantum system to mimic the behaviour of another system that is too complex to study directly. Over time, researchers have […]