Hi, I am writing a sci-fi comic and would need an info, which is very similar to this thread: https://www.physicsforums.com/showthread.php?p=4724396#post4724396 My question is, how much would it take for an asteroid to reach Earth after detection? A cca 'from to' range would be sufficient, but I don't know for this info the following factors, therefore I don't even have a rough estimation (years? months?): - what is the distance of asteroids that we are monitoring currently for possible impact analysis? - what is the average speed of an asteroid? The first one is the tougher, I digged for the info on Nasa sources (their asteroid monitoring program), but found nothing. As I plan it to be a realistic story, if anyone can give me any additional details on this topic (asteroid monitoring details) it would also be awesome. Thanks!