Question #N254

The following passage is from an article discussing the historical significance of a recent scientific discovery. \"The discovery of exoplanets has revolutionized our understanding of the universe. Prior to this discovery, scientists believed that our solar system was unique, with planets orbiting a single star. However, the discovery of exoplanets has shown that there are many other planetary systems, some of which are very different from our own. This discovery has raised fundamental questions about the origin and evolution of planetary systems, and it has led to a new era of exploration in astronomy.\"

What is the main idea of the passage?
A. Exoplanets are very different from planets in our solar system.
B. The discovery of exoplanets has changed our understanding of the universe.
C. Scientists are now exploring the universe in a new way.
D. Exoplanets raise fundamental questions about the origin and evolution of planetary systems.

Correct Answer is: B

The passage is primarily about the impact of the discovery of exoplanets on our understanding of the universe. The passage highlights how the discovery has changed our understanding of planetary systems and the origin of the universe. While other options touch on aspects of the passage, they do not encompass the main idea.