Stars and Their Sizes

  • Exhibition Text

    • Our star, the Sun, is 1.4 million kilometers across. Dim low-mass stars are only a few tenths of that size. The largest stars are luminous red supergiants nearly a thousand times the size of the Sun. Most stars are about the size of the Sun when they are born, and become giant stars in their old age.

      Show more

In This Section

The Sun

The Sun

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

Alpha Centauri

Alpha Centauri

If the Hayden Sphere is the size of the blue supergiant star Rigel, then this model is the relative size of Alpha Centauri.

Sirius

Sirius

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

Vega

Vega

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