imtoooldforreddit t1_ixbi4oj wrote

Space is really empty

If you're picturing dodging like in star wars flying through asteroid fields, that's not what space is like

In our asteroid belt, average distance from an asteroid to the next closest asteroid is about 100,000 miles

For the probes that have gone through the asteroid belt, they had absolutely no way to know if there was an asteroid coming, because the risk of even a single one was basically negligible.