1. About Star Exploration
Star Exploration is a novel and interesting game of reasoning. The star map is divided into multiple star regions, some of which have a planet with a color of red, yellow, and blue. The purpose of the game is to gather three planets of different colors together through movement, and there is only one aggregated planet in each sector area divided from the center of the circle.

2. How to Play
a. Move: Each planet can only move up to one step. The blue planet can move diagonally by one grid, the green planet can move left and right or up and down by one grid, and the red planet can move up, down, left and right by two grid.
b. Zoom: Click the + - button to zoom in or out on the star map. Drag and drop star map in the blank space.
c. Undo: click the UNDO button in the upper right corner.
d. Hint: click the HINT button right above.