NASA officials declared the Deep Impact mission lost on Friday Sp 20, 2013, after a computer glitch doomed the comet-smashing spacecraft and NASA scientists therefore ended the Deep Impact comet hunter mission.
Nationalgeographic.com: Launched in 2005, the spacecraft memorably smashed a copper-jacketed probe into the comet Tempel 1 at 22,800 miles an hour (36,700 kilometers an hour) on July 4 of that year. It then flew through the debris cloud to capture the resultant fireworks, the first close inspection of a comet’s interior. (See ”’Deep Impact’ Comet Revealed by NASA Flyby.”)