The fact that we don't see very many Earthlike planets in orbit around other stars is an indication that Earthlike planets are rare.

Question

Quizplus · Accepted Answer

The primary reason we don't see many Earthlike planets is due to the limitations of our current observational technologies and methods, which are more adept at detecting larger planets closer to their stars. Earthlike planets are smaller and often orbit further from their stars, making them more difficult to detect with current techniques.

The Fact That We Don't See Very Many Earthlike Planets