Study Reveals Multiple Interstellar Objects in Our Solar System.
A new study suggests that our Solar System has probably captured some interstellar objects (ISOs), and there could be a steady population of ISOs in near-Earth orbit. The study is based on numerical simulations, where each particle in the simulations represents a potential ISO on a different trajectory originating outside the Solar System. The researchers found that massive Jupiter plays a dominant role in capturing ISOs into near-Earth orbits. If there are captured ISOs in near-Earth orbit, they don't last long, and many of these objects will be exceedingly small. The best way to study them is to go out and meet one of the larger ones, and the ESA's Comet Interceptor mission could do it.