Planets

Overview
There are four types of planets in the game: the Sun, Snowy Planet, Rocky Planet and Desert Planet. Each has a gravitational pull and when you approach them, each causes blue dots to appear on the side of your screen. There are also crystal mines, which do not have the same traits as the planets.

The Rocky, Desert, and Snowy Planets
The rocky, desert, and snowy planets are all home to a collection of enemies, as well as always one drome. The enemies on the Snowy planet are the most difficult, while enemies on the Rocky planet are the easiest. Upon entering the each planet's atmosphere, its name is displayed on your screen and its gravity starts to affect you.

The Sun
The Sun is the star, located in the center of each solar system. Unlike the other planets, upon entering it, you start to burn, losing health until you eventually explode.

The crystal mines/Mazes
The crystal mines are found on the outskirts of the starting star system. Despite their location, they can be some of the hardest sections of the game. Due to claustrophobic circumstances and unique enemies; including enemies reminiscent of the mining ship found in Sol's asteroid belt, and large immobile platforms wielding an overwhelming missile weapon.

Trivia

 * There are currently only two systems, The starting system and Sol. The first one you start in and Sol the second more difficult one.
 * Our sun is sometimes referred to as Sol, but due to the planet composition, it is unlikely these are the same stars.
 * it is unknown why space pirates mostly inhabit Sol despite its name being the starting point of humanity, it is likely space pirates are actually aliens