With this set of eight different 3D puzzles you can build and create the Solar System in miniature. The 3D puzzles are scaled to represent the different sizes of the planets, so Saturn and Jupiter are represented as 108 piece puzzles, Uranus and Neptune as 72 piece, Earth and Venus as 54 piece, and Mars and Mercury as 27 piece puzzles, totaling 522 pieces in all. Each puzzle has curved, high quality plastic pieces, which are numbered on the inside for easy assembly. Each "planet" comes with its own stand and the whole set can either sit on the colourful Solar System poster (which includes facts about each of the planets), or be suspended by thread. The set also includes a kit which assembles into a "sun" mobile, and a fact-filled information leaflet for all budding astronomers out there!This puzzle uses unique plastic pieces, which slot together to build this sturdy and strong model. No glue required! Each puzzle piece is printed with a number on the reverse side, so you can either assemble the puzzle by eye, or just by following the numbers.