3 tough questions for NASA's Jim Green, Director, Planetary Science Division: Will private industry put astronauts on Mars before NASA? Can roving robots do it better? Does NASA really want the SLS? [Space Launch System]
3 tough questions for NASA's Jim Green, Director, Planetary Science Division: Will private industry put astronauts on Mars before NASA? Can roving robots do it better? Does NASA really want the SLS? [Space Launch System]