There is no science in this Sci-Fi at all, 100% brainless fiction. Not to quote every instance that doesn't make sense, but why a giant water filled hole appears under their spaceship in seconds and promptly proceeds to freeze in seconds is beyond me. Smart doctor mom should be able to compute that accounting for the salinity of course. Meanwhile dad and son go wandering for magnesium which they pick form a random wall?? At this point I'm just going on to meet the min character count. Don't waste your time with this if you like to ask questions or have taken an elementary level science class...