NASA is on a high after the success of the Deep Impact mission.“Our experiment went very, very well. We touched a comet and we touched it hard,” said Pete Schultz, co-investigator at Brown university. The first pictures showed a small fireball followed by a much bigger incandescent flash. The collision marks the first time a spacecraft has come into contact with a comet. It is hoped Deep Impact will give valuable insights into what lies in store for the European mission Rosetta which aims to orbit and land on a comet for the first time. It was launched last year on a 10-year journey.