It seems something extraordinarily large stirred it up. However, the disk of the Solar System is relatively warped, and the orbits of its planets are slightly tilted and elliptical. It is quite ...
The same year that Pluto was ignominiously stripped of its status ... the notion that there is a ninth planet lurking out in the darkness of our Solar System beyong Neptune.
The solar system consists of 8 planets, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has its own unique characteristics, such as size, composition ...