In 2005 there were fireworks on the 4th of July -- 83 million miles away, as the Deep Impact probe hit one of these
[DOC] [TLE] Deep Impact: NASA Projectile to Blast Through Comet's Skin ... [PAR] Dec 15, 2004 ... Called Deep Impact, the satellite will fly more than 268 million miles ... a comet 
called Tempel 1, some 83 million miles from Earth, and aim a ... 12, and the 
satellite's yard-wide, 820-pound probe is to collide with the racing comet July 4.