See also this older LEGO orrery produced by the University of California as an educational project for NASA Kepler mission: https://www.nasa.gov/wp-content/upl

See also this older LEGO orrery produced by the University of California as an educational project for NASA Kepler mission: https://www.nasa.gov/wp-content/uploads/2016/09/table-top_transit_demo_with_three-planet_orrery.pdf https://www.nasa.gov/wp-content/uploads/2016/09/table-top_tr... https://www.nasa.gov/wp-content/uploads/2016/09/table-top_transit_demo_with_four-planet_orrery.pdf https://www.nasa.gov/wp-content/uploads/2016/09/table-top_tr... Also: http://mrob.com/pub/lego/orrery.html http://mrob.com/pub/lego/orrery.html