NASA is running a simulation of an asteroid hitting Earth

Over the last week, we've heard a lot of talk in the chat about catastrophic scenarios that are supposed to occur on the 24th of this month. Not as many times as I told these people to shut up and stop trying to scare everyone, it was too late, all of us had already had it seeded in our minds. Now because that seed had already been planted, this is all I was personally thinking about all week long. I was trying to piece anything I could together, in order to make this debunked. And as much as I try to debunk it, it was still seated in my mind and worrisome. But was it something that needed to be worried about?