The quintom scenario explains this phenomenon's eq
The quintom scenario explains this phenomenon's equation of state, and this influences the cosmic   microwave background through the integrated Sachs-Wolfe effect. The coincidence problem asks  when this phenomenon began to affect the universe. In 1998, Adam Riess gathered the first evidence   of this phenomenon by showing that type Ia ["one A"] supernovae appeared fainter than predicted.  The cosmological constant has been reintroduced to account for the acceleration caused by this  phenomenon that accounts for two-thirds of all mass-energy. Name this form of energy named for  being difficult to observe directly.
The quintom scenario explains this phenomenon's equation of state, and this influences the cosmic   microwave background through the integrated Sachs-Wolfe effect.