Voyager 1 becomes first human-made object to leave solar system

Voyager 1 becomes first human-made object to leave solar system

Posted: Updated:

(CNN) -- At the edge of the heliosphere, you wouldn't know by looking whether you left the cradle of humanity behind and floated out into interstellar space. You would just see unfathomably empty space, no matter which side of the invisible line you were on.

But scientists now have strong evidence that NASA's Voyager 1 probe has crossed this important border, making history as the first human-made object to leave the heliosphere, the magnetic boundary separating the solar system's sun, planets and solar wind from the rest of the galaxy.

"In leaving the heliosphere and setting sail on the cosmic seas between the stars, Voyager has joined other historic journeys of exploration: The first circumnavigation of the Earth, the first steps on the Moon," said Ed Stone, chief scientist on the Voyager mission. "That's the kind of event this is, as we leave behind our solar bubble."

A new study in the journal Science suggests that the probe entered the interstellar medium around August 25, 2012. You may have heard other reports that Voyager 1 has made the historic crossing before, but Thursday was the first time NASA announced it.

The twin spacecraft Voyager 1 and 2 were launched in 1977, 16 days apart. As of Thursday, according to NASA's real-time odometer, Voyager 1 is 18.8 billion kilometers (11.7 billion miles) from Earth. Its sibling, Voyager 2, is 15.3 billion (9.5 billion) kilometers from our planet.

Technically, if you include the distant comets that orbit the sun, then Voyager 1 has not left "the solar system," Stone said. For that, we'll have to wait another 30,000 years.

Another milestone for long after we're gone: The probe will fly near a star in about 40,000 years, Stone said.

Read more from CNN

  • FOX25 Slideshows

  • FOX 25 FeaturesMore>>

  • Tell Me Something Good

    Tell Me Something Good

    Tired of all the bad news? Looking for some good news? Tell Me Something Good, does just that! FOX 25's Mike Brooks finds the good in Oklahoma and tells you all about it.
    Tired of all the bad news? Looking for some good news? Tell Me Something Good, does just that! FOX 25's Mike Brooks finds the good in Oklahoma and tells you all about it.
  • Waste Watch

    Waste Watch

    How are your tax dollars being spent? FOX 25 Waste Watch tracks whether local, state and federal governments, or any groups, are using your money wisely... or wasting it.
    How are your tax dollars being spent? FOX 25 Waste Watch tracks whether local, state and federal governments, or any groups, are using your money wisely... or wasting it.
Powered by WorldNow
Powered by 

WorldNow
All content © Copyright 2000 - 2014 WorldNow and KOKH. All Rights Reserved.
For more information on this site, please read our Privacy Policy and Terms of Service.