> douldn't the dust technically become the atmosphere? Only for short time, while it's vaporised into a gas by the impact. For that time it will join the rest

> douldn't the dust technically become the atmosphere? Only for short time, while it's vaporised into a gas by the impact. For that time it will join the rest of the "infinitesimal amount of gas" that forms a very tenuous atmosphere around the moon. https://www.nasa.gov/mission_pages/LADEE/news/lunar-atmosphere.html https://www.nasa.gov/mission_pages/LADEE/news/lunar-atmosphe...