Monday, 20 December 2010

NASA's Voyager 1 spacecraft has reached the outside edge of the solar system.

A NASA space probe dispatched 33 years ago for the first close-up studies of Jupiter and Saturn has entered the tail of the solar system, a place where the constant stream of charged particles flowing from the sun ebbs.

This final phase of solar system exploration should last another four years, computer models show, though scientists overseeing the two Voyager spacecraft really don't know what to expect.

Voyager 1 is now about 10.8 billion miles from the sun, traveling in a region of space known as the heliosheath, a turbulent area between the sphere of space influenced by the sun and magnetic forces from interstellar space that lies beyond.

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