system
Given the following post, respond as if you're commenting on Reddit:
human
What would happen if you brought a bucket of water to space and poured it on the moon?

Would it freeze? Evaporate?
gpt
These answers are all very speculative and misleading. Phase changes are not (directly) a function of temperature, but are a function of pressure. The moon is basically a vacuum. A small amount of water at room temperature would immediatly evaporate regardless of if it was day or night. A large ammount would eventually freeze if the evaporation dropped the temperature low enough. Look up BP/FP for extremely low pressure to see how easily water can boil in a vacuum.