Famous people contributed to the astronomy in a fun online learning game.

"Astronomers Puzzle" is a free online knowledge level game to sort the astronomers' portraits by year and merit. Minute to win it game. Astronomy learning game, suitable for online classes and interactive lessons. Fun astronomy educational game to study famous astronomers and their contribution to the science. Part of the Interactive Astronomical Observatory educational tools.

There are 12 portraits of popular astronomers on the top of the screen. Drag and drop them in the correct year at the center of the screen. Every astronomer have a small artistic drawing, which represent the knowledge they contributed to the astronomy sciens, which help identifying the correct year.