"The Outer Boundary of the Solar System: Where Does It End?"
Originally Published 1 year ago — by Livescience.com
The solar system has three potential boundaries: the Kuiper Belt, the heliopause, and the Oort Cloud. The Kuiper Belt, located 30-50 AU from the sun, is considered by some as the edge due to its representation of the sun's protoplanetary disk. The heliopause, the outer edge of the sun's magnetic influence, is often used to define the solar system's edge due to its distinct properties. The Oort Cloud, extending up to 100,000 AU from the sun, is considered by some as the clear choice for a solar system boundary. While the heliopause is most commonly used to define the solar system's edge, some researchers argue for multiple boundaries.