The discovery could help scientists get closer to understanding the mysterious invisible matter that makes up the bulk of our ...

Now, the new study has supported the selection of two specific types of annihilation reactions that ... and when an antiproton encounters a proton or neutron, they mutually annihilate.

those that have blown up and collapsed into black holes and neutron stars, or have withered into white dwarfs. Energy in this era is generated through proton decay and particle annihilation.