| | Voyager 1 encounters the edge of the Solar System, according to Bell Labs space physicist and other scientists (Site not responding. Last check: 2007-10-31) |
 | | More than eight billion miles from Earth, the farthest an operating spacecraft has ever journeyed, Voyager 1 is providing scientists with data from a fascinating yet little understood region of space the frontier where the Sun's influence begins to wane, and the tenuous vastness of interstellar space takes over. |
 | | This is a region where the speed of the solar wind drops dramatically as the wind brakes as it mixes with the interstellar medium, and where the density of ionized particles increases many times. |
 | | The Voyager probes, among NASA's most successful spacecraft, are expected to provide data until approximately 2020, when they will exhaust their power supply from nuclear isotopes and drift off into space. |
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