Changes

As of February 2008, Voyager 1 was at a distance of 9.8 billion miles (105.3 [[Astronomical unit|Astronomical Units]] (AU)) from the Sun.  Voyager 1 is escaping the solar system at a speed of about 3.6 AU per year.  Voyager 1 crossed the Termination shock on December 16, 2004, the area of space where the solar wind approaches the boundary of the heliosphere, and a termination shock forms where this wind abruptly slows down to about 250,000 miles per hour. <ref>http://voyager.jpl.nasa.gov/mission/fastfacts.html Voyager Mission Fast Facts</ref>

As of February 2008, Voyager 1 was at a distance of 9.8 billion miles (105.3 [[Astronomical unit|Astronomical Units]] (AU)) from the Sun.  Voyager 1 is escaping the solar system at a speed of about 3.6 AU per year.  Voyager 1 crossed the Termination shock on December 16, 2004, the area of space where the solar wind approaches the boundary of the heliosphere, and a termination shock forms where this wind abruptly slows down to about 250,000 miles per hour. <ref>http://voyager.jpl.nasa.gov/mission/fastfacts.html Voyager Mission Fast Facts</ref>

==References==

==References==

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