The CMS experiment at CERN is the latest to weigh in on the mass of the W boson—an elementary particle that, along with the Z ...

BASE takes antiprotons that have been decelerated by the Antiproton Decelerator and the Extra Low Energy Antiproton ...

A new discovery could finally shed light on a persistent cosmological mystery. The heaviest antimatter nucleus ever detected ...

The heaviest antimatter nucleus to date was spotted in a particle accelerator. It could provide new insights into the nature ...

Maxwell's demon cooling trap measures the magnetic moment of antiprotons with higher precision than ever before ...

The antimatter heavyweight, called antihyperhydrogen-4, is made up of an antiproton, two antineutrons and one antihyperon (a baryon that contains a strange quark). Physicists found traces of this ...

Scientists at Brookhaven National Laboratories have discovered a new kind of antimatter nucleus, which could help explain why almost everything in the universe is made of matter instead of ...

An artistic representation of antihyperhydrogen-4 — an antimatter hypernucleus made of an antiproton, two antineutrons, and an antilambda particle — created in a collision of two gold nuclei (left).

In fact, it was the heaviest and most exotic antimatter nucleus ever seen. To be specific, it consists of one antiproton, two antineutrons and an antihyperon, and has the name of antihyperhydrogen-4.

Katy is Managing Editor at IFLScience where she oversees editorial content from News articles to Features, and even occasionally writes some.