Content of the Universe

Observations reveal that the Universe seems to consist of 4.6% of atoms, the building blocks of stars and planets and 23% of dark matter, different from atoms, does not emit or absorb light. It has only been detected indirectly by its gravity. 72% of the universe, is composed of 'dark energy', that acts as a sort of an anti-gravity. This energy, distinct from dark matter, is responsible for the present-day acceleration of the universal expansion. The data is not accurate and AMS-02 will hopefully help to better define the numbers.