Question

the word astronomy contains the root astro. what does the root astro mean? look at or observe star earth or rock

Explanation:

The root "astro" is of Greek origin. In the context of words like "astronomy" (the study of celestial objects such as stars, planets, etc.), the root "astro" specifically refers to "star". "Look at or observe" is not the meaning of the root "astro" but might be related to the suffix or other parts in some words. "Earth or rock" is not relevant to the root "astro".

Answer:

star