This three dimensional model allows students to study our solar system, looking at planets' relative sizes and colours. Planets can be set by month to show their relative positions. The 5.9" sun is supported on a sturdy base with the outer most (dwarf) planet being 18" from the sun. An illustrated guide is included with planet position tables. Weight 3.1lb, Length 22.0in, Width 13.5in, Height 11.0in.