I woke this morning to find a press release in my Inbox that said: "One hundred and seventy-one days into its 172-day journey to comet Tempel 1, NASA's Deep Impact spacecraft successfully released its impactor at 11:07 p.m. Saturday, Pacific Daylight Time," or 06:07 UTC.
During April 2005, the Mars Global Surveyor happened to pass relatively close to Odyssey and Mars Express. What resulted were remarkably clear pictures of human-made spacecraft orbiting and alien world.
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