Voyager Nears End of Solar System

Scientists Dispute Whether Craft Has Crossed Final Frontier

An image depicting the journeys of Voyager 1 and 2 through the solar system. NASA/JPL hide caption

See a larger, detailed version.
itoggle caption NASA/JPL

Two studies published in the journal Nature this week say NASA's Voyager 1 spacecraft is starting to probe the outermost edge of the solar system. Its voyage of exploration started in 1977, principally to study Saturn. But now it's heading off into the unknown.

At 8.4 billion miles from the sun, Voyager is far beyond Pluto and plunging through cold, dark and nearly empty space. It's destination is the final frontier of the solar system, a region populated largely by particles streaming from the sun at amazing speeds. As NPR's Richard Harris reports, some scientists say Voyager has crossed over into the beginning of the end of the solar system; others say it still has some distance to go.

Related NPR Stories

Comments

 

Please keep your community civil. All comments must follow the NPR.org Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.