What has been learned from extremely distant (high-z)supernovae?
A)The events that took place before the Big Bang
B)The history of the expansion of the universe
C)The location of the center of the universe
D)The age of the Sun

Question

Quizplus · Accepted Answer

Extremely distant (high-z) supernovae have been used to study the history of the expansion of the universe. By observing the brightness and distance of these supernovae, astronomers have been able to determine that the expansion of the universe is accelerating, which led to the discovery of dark energy.

What Has Been Learned from Extremely Distant (High-Z)supernovae