[dragnet2]

That's all true, however we've had asteroid and larger meteor near misses which we never detected until they had passed us or actually hit us.

In fact earth was just had an encounter by an undetected meteor which exploded over Russia, which was about the size of a school bus. The shock wave caused hundreds of injuries.

[Boogieman]

Sure, but us not detecting them is due to the inherent difficulty of detecting any small object in space. It has nothing to do with something sneaking up on us from “behind the sun”.