10. NASA has built crafts that allow longer stays in space, survive under different pressures and weather conditions, and conduct many investigations. One of the
most helpful vehicles the U. S. has used is the space rover. It contained several
improvements over earlier technology. The space rover differed from previous
space v Snicles because it - *
was cheap to build and easy to program
O could carry more than one person
O could travel only to the Moon and back to Earth
O was used to collect, analyze, and send data from planets outside of Earth