As astronomers learned to measure the distance to the stars and how the laws of Physics works with rockets, it seemed that travel between the stars would take so much energy and time to get there that interstellar travel is a remote possibility at best.  On the other hand,  objects have been discovered being ejected from our solar system by a close encounter with Jupiter.Recently a team of researchers identified a region of our solar system where interstellar comets, asteroids, and even rouge planets might permanently reside after being captured  by the Sun’s gravity.