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

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.

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

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 ...

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 .