Deuterium has one more neutron in its nucleus than hydrogen and weighs about twice as much. One would therefore expect that heavy water, in which two atoms that are twice as heavy are bound to the ...

An astonishing discovery from the James Webb Space Telescope may rewrite our understanding of the Universe’s early years. A ...

Scientists trying to discover the elusive mass of neutrinos, tiny "ghost particles" that could solve some of the universe's ...

Hydrogen was floating around in a neutral state, meaning each little hydrogen atom had an electron bound ... vigorous star formation in the galaxy's nucleus, the presence of a growing supermassive ...

For example, the electron in a hydrogen atom attracts the proton that is the nucleus, so the effective distance between them changes. QED has a prescription to calculate the self-energy ...

That is less than a billionth of the mass of a proton, which is inside the nucleus of every atom. The new upper limit for a .

A global race for nuclear augmentation is on. Over 40 countries are expanding capacity, which will treble nuclear energy ...

Many scientists say “subcritical” experiments and computer simulations make nuclear weapons testing unnecessary.

Where Is everybody? The answer to Fermi's famous paradox may be lurking closer than we expected... and it could involve ...

The maximum valency for hydrogen appears to be four ... Stated briefly, this theory assumes the atom to consist of a positively charged nucleus surrounded by a system of electrons which are ...