| These sources have been attributed to white dwarfs, neutron stars and black holes. |
| The antineutron contains one anti-up quark and two anti-down quarks, giving it a charge of 0, just like the regular neutron. |
| A careful review of low-yield and neutron bomb warheads would be most timely. |
| The neutron is a better hammer than the alpha particle for smashing nuclei. |
| The strong force is the one that is dominant in the atomic nucleus, acting between the quarks inside the proton and the neutron. |
| Stellar remnants such as white dwarfs, neutron stars, and black holes will remain. |
