Therefore, electrons cannot be arranged at random, but they must have fixed levels of energy within each type of atom. Bohr's 'solar system' model of the atom is the way that most people think ...

In school, you probably learned that an atom was like a little solar system with the nucleus as ... the math tells us that if this simplistic model was accurate, matter would be volatile.

For decades, scientists have postulated that either there is additional physics at work or that our predominant cosmological model needs ... power from one solar system to the next.

If microscopic black holes born a fraction of a second after the Big Bang exist, as some researchers suspect, then at least one may fly through the solar system ... a hydrogen atom," study co ...