So a meteor flys by

[SIXFOOTERsez]

They manage to see a few, but damn sure not all. The ones they do see are from reflected light from other sources, others are spotted as they temporarily block the visible light from background stars from certain viewpoints. It is entirely possible that there is a big one out there headed this way with EARTH stamped on it, just never know.
Not one of those things I can fix so not gonna worry about it. Always the boy scout though, Be Prepared