Humanity is on the verge of becoming an interstellar civilization!
At the mind-blowing distance of 11 billion miles, the Voyager 1 spacecraft, launched in 1970’s, is about to leave the domain of the sun forever and enter interstellar space — a region between the stars!
This is a truly amazing milestone for all of humankind.
See http://www.nasa.gov/mission_pages/voyager/index.html for details.