This question is a bit tricky! It's worded in a way that makes it seem like there are two separate options. Here's a breakdown:

* Planets are visible. We can see some planets in our solar system with the naked eye, like Venus, Mars, Jupiter, and Saturn.

* Planets are inside the solar system. This is a fact. Planets orbit a star, and our solar system is defined by the Sun and everything that orbits it.

So, the answer is yes to both. Planets are both visible (some of them, at least) and inside the solar system.