An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

The word magic is not often used in the context of science. But in the early 1930s, scientists discovered that some atomic ...

Unlike nuclear fission, which relies on splitting an atom to create energy, fusion is where nuclei, such as hydrogen isotopes, are forced together to create a heavier helium nucleus, which ...

4. The helium-3 nucleus formed has less mass than the combined mass of hydrogen-1 and hydrogen- 2. This missing mass is released as energy.

STAR researchers had previously observed antimatter nuclei created in RHIC collisions, like a particle dubbed the antihypertriton and the antimatter equivalent of a helium nucleus called antihelium-4.

Many heavy atoms form from a supernova explosion, the remnants of which are shown in this image. NASA/ESA/Hubble Heritage ...

How do more massive atoms form? So, the hydrogen and helium atoms formed during recombination, when the cooler temperature allowed electrons to fall into orbits.

How do more massive atoms form? So, the hydrogen and helium atoms formed during recombination, when the cooler temperature allowed electrons to fall into orbits.