[Voyager] First spacecraft to enter interstellar space

Image: http://www.jpl.nasa.gov/spaceimages/images/mediumsize/PIA17462_ip.jpg PASADENA, Calif. -- NASA's Voyager 1 spacecraft officially is the first human-made object to venture into interstellar space. The 36-year-old probe is about 12 billion miles (19 billion kilometers) from our sun. ...