The event hailed the Viking missions as a crowning achievement of NASA’s initial Mars exploration program, but largely overlooked one aspect of it: Viking was the last NASA Mars mission for a generation. Some in the Mars science community worry NASA is in danger of another gap in Red Planet exploration. The cancellation of Mars Sample Return (MSR) has put the future of Mars exploration into question as NASA increasingly focuses on the moon. At the event, Lindsay Hays, senior scientist for Mars exploration at NASA, emphasized the 30-year record of Mars exploration at the agency, going back to Pathfinder and Mars Global Surveyor. In June, NASA announced it would provide a science payload for an unnamed Mars mission being developed by Relativity Space.