In the 1990s,astronomers found that distant Type I supernova were __________ than they expected,leading them to conclude that __________.
A) brighter;the universe's expansion rate was decreasing with time
B) brighter;the universe was finite in size
C) fainter;the universe's expansion rate has been increasing with time
D) fainter;the universe was infinite in size

Question

Quizplus · Accepted Answer

The fact that distant Type I supernova were fainter than expected led astronomers to conclude that the universe's expansion rate has been increasing with time, which suggests the existence of dark energy. This discovery led to the 2011 Nobel Prize in Physics being awarded to three astronomers for their work on the accelerating expansion of the universe.

In the 1990s,astronomers Found That Distant Type I Supernova Were