The antimatter nucleus is called antihyperhydrogen-4. It is made up of an antihyperon, an antiproton and two antineutrons.

Just as it's possible to squeeze out a fine mist of antimatter using particle colliders here on Earth, nature continues to ...

Composed of four antimatter particles -- an antiproton, two antineutrons, and one antihyperon -- these exotic antinuclei are known as antihyperhydrogen-4. Scientists studying the tracks of ...

These nuclei are like regular helium nuclei, except that instead of having two protons and two neutrons, they have two negatively charged antiprotons and two antineutrons. The particles existed ...

It's antihelium-4, a conglomeration of two antiprotons and two antineutrons. This antihelium is the antimatter partner to what physicists call the alpha particle (identical to a standard helium ...

These particles have counterparts known as antiparticles — antiprotons, antineutrons and positrons, respectively — that have the same mass but the opposite electric charge. (Although neutrons ...

However, this raises another question. Antielectrons, antiprotons and antineutrons should be able to combine to make whole antiatoms, and indeed antiplanets and antigalaxies. What's more ...

There are also neutral antineutrons. And if any of these particles touch their antiparticles—if, say, an electron touches a positron—they annihilate each other in bursts of energy ...

Most of the recorded particles were ordinary, but some unpublished reports indicate that ten of them were not typical at all — they consisted of pairs of antiprotons stuck to one or two antineutrons.