Deep Impact

The Deep Impact mission was the first experiment to probe beneath the surface of a comet, attempting to reveal never before seen materials that would provide clues about the internal composition and structure of a comet. The instruments onboard the spacecraft, along with ground-based telescopes and space-based observatories, observed the impact and examined the resulting debris and interior material. The mission advanced our understanding of comets and provided a wealth of data that will take years to fully interpret.