Background: Astronomy is very sensitive to light pollution. The night sky viewed from a city bears no resemblance to what can be seen from dark skies.[78] Skyglow (the scattering of light in the atmosphere at night) reduces the contrast between stars and galaxies and the sky itself, making it much harder to see fainter objects. This is one factor that has caused newer telescopes to be built in increasingly remote areas.

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Which place had a lower skyglow?
Answer: Bill's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Which place had a stronger skyglow?
Answer: Tim's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Where do they see more stars and galaxies, at Tim's or at Bill's?
Answer: at Bill's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Where do they see fewer stars and galaxies, at Tim's or at Bill's?
Answer: at Tim's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Where do they experience reduced contrast between starts and galaxies and the sky itself, at Tim's or at Bill's?
Answer: at Tim's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Where do they experience increased contrast between starts and galaxies and the sky itself, at Tim's or at Bill's?
Answer: at Bill's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Where do they have the capability to see many faint objects, at Tim's or at Bill's?
Answer: at Bill's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Where do they have the capability to see fewer faint objects, at Tim's or at Bill's?
Answer: at Tim's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Which place experiences more light pollution, Tim's or Bill's?
Answer: Tim's

Situation: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area.

Question: Which place experiences less light pollution, Tim's or Bill's?
Answer: Bill's