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

Most of the universe’s hydrogen and helium atoms formed around 400,000 years after the Big Bang, which is the name for when scientists think the universe began, about 14 billion years ago.

What is the current theory of how our universe began? Our current model for the early universe is known as the "hot Big Bang.

This deep view of the Orion Constellation glows in reddish hues thanks to a filtered view of hydrogen alpha emission, a type ...

As you look at your fingers on the computer keyboard, every atom inside them that is not hydrogen or helium was once inside a star and is now on loan to you from the great library of atoms in the ...

London-listed junior Sound Energy and subsurface specialist Getech have joined forces to establish a company to hunt for ...

The researchers had previously measured muonic helium-4 and, a few years ago, the atomic nucleus of muonic hydrogen and deuterium. Muonic helium-3: Twice as slimmed-down Helium-3 is the lighter ...

Still, as a proportion of the atoms in the planet as a whole, there isn’t much hydrogen. There's far less helium, however; so little that no one noticed it until its spectral lines were spotted ...

Helium is inert - it does not react with other substances or combust - and its atomic number is 2, making it the second lightest element after hydrogen. Rockets need to achieve specific speeds and ...

Most of the universe's hydrogen and helium atoms formed around 400,000 years after the Big Bang, which is the name for when scientists think the universe began, about 14 billion years ago.

Most of the universe's hydrogen and helium atoms formed around 400,000 years after the Big Bang, which is the name for when scientists think the universe began, about 14 billion years ago.

Most of the universe’s hydrogen and helium atoms formed around 400,000 years after the Big Bang, which is the name for when scientists think the universe began, about 14 billion years ago.