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

The question of where atoms come from requires a lot of physics to be answered completely – and even then, physicists only have good guesses to explain how some atoms are formed.

Scientists have discovered ancient helium in volcanic rocks, indicating the element may be leaking from Earth's core. fpm/E+/Getty Images Sign up for CNN’s Wonder Theory science newsletter .

Helium is the simplest element in the periodic table with more than one particle in its nucleus, yet state of the art theory and experiments on it don't add up.

Neutral helium microscopy and atom optics constitute an innovative imaging paradigm that exploits low-energy, charge-neutral helium atoms to non-destructively investigate surface properties at the ...

All the latest science news on helium atom from Phys.org. Find the latest news, advancements, and breakthroughs.

Scientists have discovered ancient helium in volcanic rocks, indicating the element may be leaking from Earth's core. fpm/E+/Getty Images Sign up for CNN’s Wonder Theory science newsletter .