Part of Scales of the Universe.

Rigel_HERO AMNH/D. Finnin

If the Hayden Sphere is the size of the Kuiper Belt of comets, then this model is the relative size of blue supergiant star Rigel.

Rigel is a blue supergiant star marking the knee of the constellation Orion. If placed where the Sun is, Rigel would engulf the orbit of Mercury, the innermost planet.