I don't know much about landing extraterrestrial missions, but I would imagine that the moment of touchdown is exactly the moment everyone in the control room

I don't know much about landing extraterrestrial missions, but I would imagine that the moment of touchdown is exactly the moment everyone in the control room should be keenly paying attention to their assignment instead of jumping up to celebrate (or at least try not to distract those that are). Because if that thing sunk into a pool of moon water or landed on top of another lunar lander, it would be 15 minutes before anyone realized. Just a minor layman observation. Anyhow congratulations to this team and to the people of this great nation.