What evidence do we have for the existence of "dark energy"?
A)It blocks our view of distant parts of the universe
B)The universe contains more light than has ever been emitted by stars
C)Expansion seems to be accelerating
D)We see the cosmic background radiation in all directions

Question

Quizplus · Accepted Answer

Observations of Type Ia supernovae in distant galaxies showed that their brightness indicated they were further away than expected, implying that the expansion of the universe is accelerating. This accelerated expansion cannot be explained by the gravitational force of visible matter and is believed to be caused by the presence of dark energy.

What Evidence Do We Have for the Existence of "Dark