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Articles on Antimatter

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Measuring the mass of W bosons took 10 years – and the result was not what physicists expected. PM Images/Digital Vision via Getty Images

A decade of science and trillions of collisions show the W boson is more massive than expected – a physicist on the team explains what it means for the Standard Model

A decadelong experiment produced the most accurate measurement yet of the mass of W bosons. These particles are responsible for the weak force, and the result is more evidence for undiscovered physics.
There’s a lot we still don’t know about antimatter. Shutterstock

Antimatter breakthrough sheds light on matter’s shadowy twin

One of the great mysteries of the universe is why there is so much more matter than antimatter. Now a new experiment is helping us understand the nature of antimatter better than ever before.
There’s evidence that antimatter is produced in thunderstorms. Thomas Bresson/Flickr

Explainer: what is antimatter?

Antimatter is at the heart of one of the biggest conundrums in physics. Here’s why.

Does antimatter weigh more than matter?

Researchers have developed, for the first time, a method to efficiently produce long-lived “positronium” – a bound state…
Get to grips with the latest development in cosmic couture. NASA

Our new antimatter belt … all the rage in 2011

In the past week, many media outlets have reported the discovery of an antimatter “belt” circling the earth. A range of potential uses for this belt have already been floated – perhaps the most exciting…

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