Airicist
13th May 2015, 10:48
NASA (https://pr.ai/showthread.php?6021)
Press-release "NASA Selects Advanced Space Technology Concepts for Further Study (https://www.nasa.gov/press-release/nasa-selects-advanced-space-technology-concepts-for-further-study)"
May 8, 2015
Press-release "NASA Selects Advanced Space Technology Concepts for Further Study (https://www.nasa.gov/press-release/nasa-selects-advanced-space-technology-concepts-for-further-study)"
May 8, 2015