its not different at all they are just outer planets
they are all different sizes
They are all bigger
Different planets have all sorts of different gasses Jupiter and Saturn are both gas giants and have many different gasses.
Planets have to go in different directions all the time because they all follow orbits that are more or less circular.
No. Planets form by a process called accretion, which is driven by gravity. Nobody creates planets.
The inner planets are small and rocky, the outer planets are much larger and have no solid surface, they are called the gas giants.
They all are different colors
If you mean all our planets and comets, it's called the Sun. It is called "The Solar System".
Mercury, Venus, Earth and Mars are the Rocky planets. They are called so simply because they are rocky, their outer layer is solid. All other planets in the solar system are gaseous.
All planets in our solar system will never align perfectly in a straight line due to their different orbital paths and speeds. The closest alignment that occurs is called planetary alignment, and it happens roughly every 500 years.
The inner planets are all rocky planets. The outer planets are completely made up of gases. The inner planets are much smaller than the outer planets.