In the late 70s, NASA launched two Voyager probes to explore the outer planets in our solar system.  The spacecraft have been traveling on different paths and at different speeds for over 35 years. The Voyagers have explored the outer giant planets in our solar system: Jupiter, Saturn, Uranus and Neptune. They have also examined 49 moons, and the systems of rings and magnetic fields the aforementioned planets possess. Both spacecraft continue to send information relating to their surroundings through NASA's Deep Space Network. They both also contain recorded messages on a gold phonographic record that contain images and sounds of Earth - complete with a diagram to show aliens how to play the record. Nearly 11 billion miles away from the sun, Voyager 1 is the farthest human-made thing from Earth. Scientists are speculating that Voyager 1 left our solar system yesterday. The probes will continue exploring interstellar space carrying our message to any extraterrestrials that might cross their paths!
 
Here's a NASA infographic that provides a timeline and describes how the Voyagers work. Want to learn more about the Voyager probes? Check out the NASA website or this article.
 
Sun, 04/21/2013 - 3:27pm