Voyager never crashes, due to "?"

[Erim]

Many think its because there is empty space but this isn't so. Even a baseball sized rock will destroy it. How does it not crash? Im no physicist but if it is going along with the gravity how would it hit anything if everything too is going with the gravity? I might be wrong but this is a question. We all need answers. More than 35 years has passed and Voyager 1 or 2 never crashed. Discussions like these help us to understand interstellar space travel. We could one day MANtravel by jet propulsion and get resources from other planets and travel to the nearest habitable planet.

[ACG52]

Space is mainly empty. It hasn't crashed because it hasn't run into anything. They are not going along with gravity, they're moving against the solar system's overall gravitational field.

[EdEarl]

Space is not quite empty. It is filled with cosmic rays, including atoms traveling near the speed of light. If nothing as large as a grain of sand hits them, someday they may be eroded by cosmic ray particles until they become unrecognizable.

[Delta1212]

You don't even need a baseball sized rock to destroy it, but you're still underestimating just how much "empty" (in the sense of "does not contain objects that would destroy the spacecraft") space there really is. You could sit on an asteroid in the middle of the asteroid belt and not see another object larger than a dust particle within visual range in any direction, and that's a fairly dense area of space.

[Ophiolite]

Once again the Hitchhiker's Guide to the Galaxy comes to our aid.

 

"Space is big, Really big. You just won't believe how vastly, hugely, mind-boggingly big it is. I mean, you may think it is a long way down the road to the chemist, but that's just peanuts to space."

 

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