How does the study of quasars reveal information about the history of the universe?
A)Quasars are very distant, so we see them as they were in the past.
B)Quasars contain stars of all ages.
C)Quasars typically act as host galaxies for gravitational lensing.
D)Quasars generate their energy in very small volumes of space.

Question

Quizplus · Accepted Answer

Quasars are very distant objects, often billions of light-years away. Thus, the light that we see from them has taken billions of years to reach us. This means that we are seeing the quasar as it was billions of years ago, allowing us to study the history of the universe at that time.

How Does the Study of Quasars Reveal Information About the History