The Voyager 2 was launched in 1977 … that’s the year I was born! It is still traveling to the outer limits of the solar system. There are a few things that fascinates me about this:

1) The fact that it still works and is transmitting
2) It’s a person’s entire lifetime project and possibly next generation
3) That it has not been hit by anything and destroyed!

You can read more about it on RichardDawkins.net