On July 4, 2005 the probe Deep Impact blasted a crater in Tempel 1, one of these celestial travelers
The 
spacecraft sent up for Deep Impact (whose scientists have been ... Blasting a 
sizable crater in Tempel 1 should expose fresh material from the interior ... 
NASA's Deep Impact probe collided with comet Tempel 1 at 1:52 a.m. EDT.