Width of little finger with arm streched outģ2.5–28 times the maximum value for Venus (orange bar below) / 2046–1760″ the Moon has a diameter of 3,474 kmģ1–30 times the maximum value for Venus (orange bar below) / 1952–1887″ the Sun has a diameter of 1,391,400 km Note: brightest nebula in the night sky, 1.0 apparent magnitude (V) Only the much smaller core is visible without long-exposure photography. Note: brightest star cluster in the night sky, 0.5 apparent magnitude (V)Ībout six times the size of the Sun or the Moon. Note: brightest galaxy, than the Milky Way, in the night sky (0.9 apparent magnitude (V)) Width of spread out hand with arm streched out This table shows the angular sizes of noteworthy celestial bodies as seen from Earth: The angular diameter 0.03″ of the Sun given above is approximately the same as that of a human body at a distance of the diameter of Earth. The angular diameter of the Sun, from a distance of one light-year, is 0.03″, and that of Earth 0.0003″. Thus, the angular diameter of Earth's orbit around the Sun as viewed from a distance of 1 pc is 2″, as 1 AU is the mean radius of Earth's orbit.
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