Which of the following is a recent (last few decades) discovery that confirms the key idea of the Copernican Principle?
A) that the Earth has a Moon
B) that gravity waves exist
C) that planets around other stars are common
D) that 65 million years ago a large asteroid hit the Earth
E) that people from Eastern Europe are pretty smart

Question

Quizplus · Accepted Answer

The discovery that planets around other stars (exoplanets) are common confirms the key idea of the Copernican Principle, which states that the Earth is not in a unique or privileged position in the universe. This discovery suggests that there could be many other potentially habitable worlds in the universe, and that the conditions that gave rise to life on Earth may not be unique to our planet.

Which of the Following Is a Recent (Last Few Decades)