Here's What The Night Sky Would Have Looked Like 10 Billion Years Ago

Our sun has only been around for 4.5 billion years — which means it missed the cute early years of the Milky Way galaxy. If you were standing on a planet 10 billion years ago, when the Milky Way was relatively young, the night sky would have looked very different. » 4/09/15 11:07pm 4/09/15 11:07pm

A Particle Accelerator in Space Could Trigger Artificial Auroras 

Auroras appear according to the whims of nature, not humans, which might just be part of their eerie appeal. But c’mon, it’s the 21st century now. Why are we just waiting around? So here’s a crazy idea unearthed by Mark Zastrow writing in Eos: Let’s a build a particle accelerator to trigger auroras whenever we want. » 4/08/15 5:50pm 4/08/15 5:50pm

Scientists Can't Agree How Long It Would Take To Fall Through The Earth

For years, a classic question posed to college physics students is how long it would take to fall to the center of the Earth. Given that we can smash tiny particles into each other at really high speeds using magnets, you'd think this would be an easy problem to solve. But apparently not. » 3/25/15 10:00pm 3/25/15 10:00pm

We Should Be Able To Detect Spaceships Moving Near The Speed Of Light

A pair of engineers say it's possible to detect the signatures of spacecraft traveling at relativistic speeds, and we can do so using current technologies. The trouble is, their new analysis also suggests that moving through space at ludicrous speed is more hazardous than previously thought. » 3/25/15 2:22pm 3/25/15 2:22pm

The World's Biggest Physics Experiment Is About to Reboot 

The Large Hadron Collider (LHC) is the most audacious physics experiment in human history. Now scientists are about to restart the giant particle collider for a new set of experiments. Last time, they did the almost-impossible and found the Higgs Boson. This time, they might find something even more exciting. » 3/20/15 8:00am 3/20/15 8:00am

Did We Really See Light Acting as a Particle and a Wave at Once?

Several weeks ago, the internet lit up with the colorful image shown above, accompanied by headlines claiming that physicists had accomplished the extraordinary: We'd finally managed to see light as both a particle and a wave at the same time. (Your friends at Giz reported it too.) But...it's not exactly true. » 3/15/15 2:00pm 3/15/15 2:00pm

First Ever Image to Show Light as a Wave and Particle at the Same Time

What you're looking at here is a major breakthrough. The image reveals a property of light that has never been witnessed before by human eyes, though we've long known about it. But at last, thanks in an ingenious imaging experiment, we can now see how light behaves as a wave and a particle at the same time. » 3/02/15 8:00pm 3/02/15 8:00pm