A point about entropy. Entropy, in a simplistic term, is a measure of how distributed energy is in a specified environment/system; an increase in entropy means a more distributed and less effective energy supply. In the context of this thread we can assume the system to be the universe. With no outside influence the energy in the universe will tend towards the less organised state which means it spreads out and dissipates; entropy increases.
That, however, describes the universe as a whole and does not mean that it will spread out equally everywhere. Instead there will be localised areas where entropy decreases, our Solar System being one of them. The Sun gives out its energy which our planet receives and that decreases the entropy on Earth i.e. the energy we receive from the Sun is feeding the Earth and it's systems.
The Universe is a closed system, the Solar System is an open system. Overall, entropy increases in the Universe but decreases (at the moment) in the Solar System.
I said it was a simplistic explanation...