Here's why:

* Mini Solar Systems: A mini solar system would require a star at its center. Our solar system only has one star, the Sun. While we have planets, dwarf planets, moons, and other objects orbiting the Sun, there isn't a smaller star system nestled within our own.

* Binary Stars: Binary stars are two stars that orbit each other. Our solar system doesn't have a second star. The Sun is the only star in our system.

However, there are many exoplanetary systems (planetary systems outside our own) that contain multiple stars, including binary star systems.

It's fascinating to think about the possibility of a mini solar system, but it's not something we've discovered within our own system.