SpaceNuclear rockets could cut cost of Moon base NASA could save billions of dollars in launch costs for its planned return to the Moon by using nuclear-powered rockets, a top scientist says 51¶¯Âþ
TechnologyUS picks design for new nuclear warhead The arsenal of Cold War-era nuclear bombs deployed on its submarines are in need of replacements, US officials stress, against a hail of criticism 51¶¯Âþ