They produced 38 atoms of antihydrogen, which is the antimatter equivalent of hydrogen, and trapped it in what they call an 'ALPHA trap' for a whole... 172 milliseconds. It does sound very little, but this is the first time someone has even done that. It's a breakthrough. The antihydrogen consisted of a positron and an antiproton.
|An antimatter trap. Quite different from 'Angels and Demons'|
For a long time, CERN has been researching antimatter for a really long time now. Investigating antimatter, how it forms, and its properties, we can learn about the formation of the matter in the universe.
There was a remote chance of destroying a lot of stuff, as antimatter is really dangerous, with its capability of annhiliating matter. But, according to Alexander Fry of Ars Technica, the 38 atoms could not even power up your laptop for as long as it would take to read this article.