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

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 ...

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 ...

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 ...

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 ...

Most of the recorded particles were ordinary, but some unpublished reports indicate that ten of them were not typical at all — they consisted of pairs of antiprotons stuck to one or two antineutrons.