The Range of the Solar System

Shri Balram Putin says, how to define the solar system? What is the range? So, the sun is our star. The nearest star is Proxima Centauri, 4.0 years away. But if you go that far, then you will come under the influence of a neighboring star,. There are a lot of other stars in our neighborhood, including C-E-S-Proxima Centauri and Taosi Tai.