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Events on Monday 4 July 2005 1
2005Deep Impact strikes comet Tempel 1NASA probe collides with a comet to study its interiorNASA's Deep Impact spacecraft released an impactor that struck the comet Tempel 1 on 4 July 2005, blasting material from beneath its surface for study. The mission gave scientists their first direct look at a comet's interior composition. It was the first time a spacecraft had deliberately impacted a comet.