Scale the Milky Way Down to the Size of a Compact

question 90

Multiple Choice

Scale the Milky Way down to the size of a compact disc. Which of the following best describes the size, shape, and distance of the Andromeda Galaxy on the same scale?

• A) a compact disk a few meters away
• B) a grapefruit a few meters away
• C) a compact disk about the length of a football field away
• D) a pecan nut about 1 centimeter away
• E) a grapefruit about 1 kilometer away

---

Definitions:

Optic Nerve

A cranial nerve that transmits visual information from the retina to the brain.

Ganglion Cells

Type of neurons located in the retina of the eye that receive visual information from photoreceptors and transmit it to the brain via the optic nerve.

Blind Spot

The point in the visual field that lacks light-detecting photoreceptor cells, where the optic nerve passes through the optic disk of the retina.

Fovea

A tiny indentation in the eye's retina where the sharpest vision occurs.