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This artist's concept shows the general locations of NASA's two Voyager spacecraft. Voyager 1 (top) has sailed beyond our solar bubble into interstellar space, the space between stars. Its environment still feels the solar influence. Voyager 2 (bottom) is still exploring the outer layer of the solar bubble.
This artist's concept shows the general locations of NASA's two Voyager spacecraft. Voyager 1 (top) has sailed beyond our solar bubble into interstellar space, the space between stars. Its environment still feels the solar influence. Voyager 2 (bottom) is still exploring the outer layer of the solar bubble.

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    NASA: Voyager 1 has left solar system

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NASA: Voyager 1 has left solar system

NASA's Voyager 1 probe has become the first human-made object to leave the heliosphere. John Zarrella reports.

NASA: Voyager 1 has left solar system

NASA's Voyager 1 probe has become the first human-made object to leave the heliosphere. John Zarrella reports.