Do you think the Asterisk and Obelix's fear of "the sky falling on their heads" is irrational?
Here is a video made by Scott Manley that animates all asteroids discovered and logged in public databases during a 30 year period. As asteroid detection technology improves, we rapidly start discovering more!
Think about this next time you gaze up at the sky, when you contemplate the time scale at which the universe runs!
Have you seen this before? How does this factor into your thinking about the odds of us being here?