UM-Led Deep Impact Observes Huge Comet Outburst MORE DEEP IMPACT UM's Deep Impact Official Site JPL's Deep Impact Web Site NASA's Deep Impact Encounter Animation View Public Service Announcements Principal Investigator Michael A'Hearn Co-Investigator Lucy McFadden Great Comet Crater Contest! Deep Impact Newsletter Comet Crunch Ice Cream! Host Your Own Comet Party Michael A'Hearn Lucy McFadden