Answer:
I need picture because I need to understand it more
Earth's, because by adding the 's, it shows possession.
The 2nd:
Milo's puppies are still with their mother.
Sonny learns about the sun and the stars.
The way Joe Willow explains the change from day to night, is that when "daddy", in this case the sun, "goes to bed" (sets), "all the little children come out". The "little children" refer to the stars, they are coming out in the sky at night time.