Voyager 1 nears the final frontier

An artist's concept shows NASA's two Voyager spacecraft exploring a turbulent region of space known as the heliosheath, the outer shell of the bubble of charged particles around our sun. Voyager 1 is now expected to reach interstellar space by the end of next year. It will be the first manmade object to leave the solar system. (Credit: NASA/JPL-Caltech)

JOHNS HOPKINS U. (US) — By the end of next year, NASA’s Voyager 1 spacecraft may after 34 years finally go where no man-made object has gone before—interstellar space.