Question

which is evidence for the existence of dark energy (1 point)

Answer 1

One of the main pieces of evidence for the existence of dark energy is the observation that the expansion of the universe is accelerating. This was first discovered through observations of distant supernovae in the late 1990s, which showed that these supernovae were fainter and farther away than expected. This indicates that the expansion of the universe is not slowing down as previously thought, but actually speeding up. Dark energy is proposed as the explanation for this accelerated expansion, as it is hypothesized to be an unknown form of energy that permeates the universe and exerts a repulsive force, counteracting the gravitational pull of matter.