WHITFIELD: National Guard air rescues in flood ravaged areas of Colorado are on hold right now because of bad weather. Helicopters are on the ground in Boulder as the rain keeps pounding down. Floods have left hundreds of people stranded. The sheriff in Larimer County just told me that they are ready to drop food and water as soon as they can. We are following the story closely and will continue to bring you updates from Colorado. It's what we call "The Science Behind." Today we look at the achievement of the space craft, Voyager 1. It blasted into space 36 years ago. Now it has left the solar system, the first manmade object to do so. Our John Zarrella has more.</s>JOHN ZARRELLA, CNN CORRESPONDENT: Voyager has in fact entered interstellar space. Basically voyager has left the building. It's outside of the solar system, the first space craft or anything built by humans to enter interstellar space. There has been great debate within NASA as to when actually this took place. Finally, the scientists at the Jet Propulsion Laboratory were able to put all the data together and announced that in fact Voyager actually entered interstellar space one year ago. So right now it is traveling in the area between the stars in the dark, dark cold region of outer space. And it will reach the next closest object to it, a star in about 40,000 years. The Voyager project was only supposed to last about five years after touring both the planet Saturn and Jupiter, but it kept on going. Now 36 years later it has left the solar system. One interesting thing about it, it is a very, very simple space craft. In fact, your iPhone has 240,000 times more memory than Voyager, but it is still going and it's a long way out there. John Zarrella, CNN, Miami.
Voyager 1 Leaves Solar System