The Universe’s Dark Secret: Where Did All the Antimatter Go?

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Paul M. Sutter is an astrophysicist at The Ohio State University, host of Ask a Spaceman and Space Radio, and author of Your Place in the Universe. Sutter contributed this article to Space.com’s Expert Voices: Op-Ed & Insights.

So there’s this stuff called “antimatter.” You may have heard of it. It’s just like normal matter, with all the same properties and all the same abilities to make up atoms and molecules, except for one crucial difference: It has an opposite charge. Take the humble electron, for example. Mass of 9.11 x 10^-31 kg. Quantum spin of 1/2. Charge of 1.6 x 10^-9 coulombs.

It has an antimatter evil twin, the positron. The positron has a mass of 9.11 x 10^-31 kg. Quantum spin of 1/2. Charge of … -1.6 x 10^-9 coulombs.

It’s the same for every other particle out there. There’s a dark-side twin for the top quark, the neutrino, the muon and on and on and on. All the fundamental particles that make up our daily lives have a partner, living just on the other side of the charge fence.


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This article and images were originally posted on [Space.com]. Credit to the original author and Space.com | ESIST.T>G>S Recommended Articles Of The Day

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