Given an image, photo, or 3D render of a named non-Sun star (Sirius, Betelgeuse, Proxima Centauri, Vega), the learner identifies it as 'a star' and accepts that the category 'star' includes bodies that vary in color (yellow, blue-white, red, dim red), size (smaller than the Sun to ~700x larger), and distance from Earth (8 light-minutes to ~640 light-years), unified by 'in space + produces own light.'