system
Given the following post, respond as if you're commenting on Reddit:
human
How or why does moon sometimes appear bigger and in different colour?
gpt
When moon is near the horizon, we compare its size with trees, houses, building etc, which makes it look bigger compared to when it is not on horizon. You can test this by closing one eye and covering moon with your thumb and repeat again when moon is not on horizon. Your thumb should be at the same distance from your body. 

The reason for the color is due to the scattering of light by the atmosphere.

Sorry for the grammar.