The planets

There are unimaginably vast orbs of seething gas and brilliant cloud bands that contain virtually no landscapes. Now take a closer look at these planetary behemoths: Jupiter, Saturn, and Neptune (1st work). While a number of planets are accompanied by moons of all sizes and compositions, only the Earth boasts such a comparatively huge 'companion world.' What forces could have resulted in this planetary odd couple? Join the search for the answer to one of the solar system's most baffling mysteries (2nd work).