The other planets may eventually collide with one another or be ejected out of the solar system if a star passing through our solar system changed Neptune's orbit by just 0.1 percent. This essentially means that the Earth and the entire solar system can collapse if this happens to Neptune.
Our Sun, eight other planets, plus Pluto, a dwarf planet, are all supported by a perfectly balanced solar system. Different planets, however, play important roles in maintaining the gravitationally sta...