Fill in the Blanks spaceOnline version space by Татьяна Чурзина 1 daunted landed occured Humans have on the moon before with spaceships . 2 cost hurdle surface The of the moon is rocky and dusty . 3 Neptune myths resupply People used to believe in about aliens in space . 4 crew briny possibility The of life on other planets is a big mystery . 5 dried lake imagination huge The rocket flew into space to land on Mars . 6 unsheltered decades similarity It has been since humans first walked on the moon . 7 cost scarce riverbed The of traveling to space can be very expensive .