For the First Time, Scientists Trapped an Elusive Antimatter Particle—and Contained It for Months. It Could Allow Them to Test an Enduring Physics Theory
The standard model of particle physics works really well, but it can't explain why the universe exists. Something is missing, and this trapped particle might hold a clue to the answer
We haven't written up this one. Smithsonian has the full story — the link below goes straight to it.