How old is the universe? New studies disagree by a billion years

The universe likes to play coy about its age, but astronomers believe they have a pretty good idea of the range. Now, a series of new studies has investigated the question using different methods – and they’ve come up with two different answers, separa… Continue reading How old is the universe? New studies disagree by a billion years

Quantum time travel doesn’t follow Back to the Future rules

Time travel movies have different rules about what happens when you start messing around with the timeline. If you’ve ever wondered which ones make the most sense, we may now have an answer. According to experiments using a quantum time travel simulato… Continue reading Quantum time travel doesn’t follow Back to the Future rules

Strange metals: New state of matter shares properties with black holes

“Strange metals” have that name for a reason – these materials exhibit some unusual conductive properties and surprisingly, even have things in common with black holes. Now, a new study has characterized them in more detail, and found that strange meta… Continue reading Strange metals: New state of matter shares properties with black holes

Second-generation of powerful X-ray laser fires for the first time

Scientists have achieved first light with an upgrade to one of the most powerful X-ray lasers the world has ever seen. The Linac Coherent Light Source (LCLS) images individual atoms and molecules by blasting them with intense X-ray bursts, and now its … Continue reading Second-generation of powerful X-ray laser fires for the first time

World’s lightest mirror is made from a few hundred atoms

Using just a few hundred identical atoms, physicists at the Max Planck Institute of Quantum Optics have pieced together the world’s lightest mirror. Despite having a surface measured in mere microns and being invisible to the naked eye, the one-of-a-ki… Continue reading World’s lightest mirror is made from a few hundred atoms

Dark matter: What is it, how do we know it’s there and will we find it?

It sounds like science fiction to say there’s invisible, undetectable stuff all around us, and it doesn’t help that it has the spooky name of dark matter. But there’s plenty of evidence that this material is very real. So what exactly is dark matter? H… Continue reading Dark matter: What is it, how do we know it’s there and will we find it?

“Supernova machine” recreates cosmic blasts in the lab

Supernovae are some of the most energetic events in the universe, and the resulting nebulas are a favorite for stargazers. To better understand the physics behind them, researchers at Georgia Tech have created a “supernova machine” in the lab.Continue … Continue reading “Supernova machine” recreates cosmic blasts in the lab

Exciting signals from dark matter experiment could herald new physics

An experiment designed to hunt for ever elusive dark matter has returned some strange and exciting signals. The anomalies are probably not dark matter itself, but could be an indication that we’re on the right track to finding it. Out of the three poss… Continue reading Exciting signals from dark matter experiment could herald new physics

Evidence of universe’s oldest state of matter lurking inside neutron stars

Astrophysicists have found evidence of a strange substance called quark matter at the heart of compact stars. Combining recent theoretical calculations with measurements of gravitational waves from neutron star collisions, the researchers found that th… Continue reading Evidence of universe’s oldest state of matter lurking inside neutron stars