* Earth has a thick atmosphere composed mainly of nitrogen and oxygen. It's essential for life, regulating temperature, protecting us from harmful radiation, and enabling weather patterns.
* The Moon has an extremely thin atmosphere, called an exosphere, which is basically a vacuum compared to Earth's. It's so thin that it's practically nonexistent. This is because the Moon has a weak gravitational pull, unable to hold onto gases.
So, while both Earth and Moon have atmospheres, only Earth has a thick, substantial atmosphere.