But a majordrawbackofusingliquidhydrogenisitsdensity.
しかし、液体水素を使う大きな欠点は、その密度です。
With a relativelylowdensityofonly 70 g perleader, thisrequiresengineerstousemuchbiggerfueltanksthantheywoulduseforhigherdensityfuelslikeheresy, whichwasthefuelthatbroughtastronautstothemoonbackintheApolloair.
SixScientistslookat a differentpropelling, whichcouldbeusedspecificallyforMarsexploration.
6人の科学者が、火星探査に特別に使用される可能性のある別の推進力に注目しています。
Enterthespace X RaptureengineanditsnextgenerationpropellingThisengineused a combinationofliquidmethaneandliquidoxygentocreatewhatis, inmyopinion, theperfectmixturefor a reusablevehicleonMars.