NASA Expedition 6 International Space Station Science Officer Don Pettit, KD5MDT, has suggested that NASA should consider setting up lunar bases in the future as a stepping stone to expand mankind's exploration of the universe. The comment came in response to a student's question during an Amateur Radio on the International Space Station (ARISS) school group contact. Several students at Cowichan Secondary School in Duncan, British Columbia, Canada, had the opportunity to quiz Pettit about life in space via Amateur Radio on April 21.