August 24, 2002
Found this while I was poking around the Star Trek site. In the not-too-distant future, Voyager 1 will be one light-day* from Earth. Last week was the 25th anniversary of its launch. For more cool (read: "geek") stuff, here's the official Voyager project site.
* One light-day is 25.9 billion kilometers, or 16.1 billion miles. This is (to put things in perspective) 87 times the width of the Earth's orbit, or 670,000 times around the Earth itself.