Review

#09

We don't see stars during the day because the Sun is too bright. However, the Earth orbits around the Sun. Hence, the stars we see during the night change with the seasons. For example, stars that are high in the sky around midnight tonight will be approximately behind the Sun in 6 months.

#10

The seasons are the result of the Earth's tilted rotation axis with respect to the Earth's orbital plane, specifically because the tilt is fixed in space (over 1 year). Hence the northern hemisphere is tilted toward the Sun in summer but away during winter.

#20

Outermost planet - no. Nearest star - hardly. Center of our Galaxy - the entire sky would look very different.