Question

Why is it difficult to detect planets orbiting other stars?

Answer 1

It is difficult to detect planets orbiting other stars because they are distant, small, and not very bright.

Answer 2

Answer: It is difficult to detect planets orbiting other stars because they are distant, small, and not very bright.

Explanation: Typically, stars are a billion times brighter than the light reflected from any of their planets, making it very difficult to detect extra-solar planets.