A free program for Android, by Dong Digital.

This is the perfect app for people interested in astronomy.

This free educational game will help you to learn and memorise the most important celestial beings in the night sky. You will be able to recognize all the stars, constellations, and major planets by their shape, location, and appearance.

Each level is divided into categories, regions, and difficulties. 

Each category contains a number of objects that are displayed on the screen along with the description. You can expand the panel to see more details about the object. You will be presented with four options when you click “Start.”

You will be given an opportunity to review your mistakes before progressing further.