Logsdon said the relative simplicity of ares i-x , when compared to the ares I design , may make success more likely .
洛格斯登说，与战神一号相比，战神i-x火箭相对简洁，这将更容易获得成功。
" Any time you launch something new there 's always the possibility of an accident . This is still rocket engineering , " said john logsdon , a space policy expert and professor emeritus at george washington university in washington , d.c.
Planting a man on its surface required no big technological innovations , says mr logsdon , " just very expensive mastery over nature using the scientific and technological knowledge available in 1961 " .
Space analyst prof john logsdon from george washington university said the two nations needed to learn to trust each other first , perhaps in the field of robotic space science , before there could be wider co-operation .
