Deep Impact Blasts Off For Comet Tempel 1

Wynken de Word writes "NASA's Deep Impact, a copper-fortified, comet-busting spacecraft, was launched Wednesday afternoon. 'NASA had a single second - at precisely eight seconds past 1:47 p.m. - to send Deep Impact on a 431-million-kilometre, six-month voyage to Comet Tempel 1.' The goal is to blast a big hole in the comet and check out what's preserved inside. Also see the Deep Impact site."