"Deep Impact has been a fantastic, long-lasting spacecraft that has produced far more data than we had planned," said Mike A'Hearn, NASA's Deep Impact principal investigator, in a statement. "It has revolutionized our understanding of comets and their activity."
The spacecraft gained scientific significance for sending back information about the surface and interior composition of comets, as well as data about other planets.
Deep Impact deployed a probe that was intentionally run over by a comet dubbed Tempel 1. The impact shot material from the comet's surface into space where the spacecraft could better analyze it with its telescopes and onboard scientific instruments.