The Voyager 1 probe was launched from earth in 1977. Its mission is to probe space. That's why it's called a probe.
Voyager 1 trots along at a healthy 62,140 km/h, has travelled nearly 20 billion kilometres in almost 40 years, and still hasn't left our solar system.
Maybe it's not unreasonable that I have to park two blocks away from the dentist and walk.