As we reflect in 2016 on the 30th anniversary of the Shuttle Challenger tragedy, it is fitting that we remind ourselves why all of these brave and daring pioneers go into space. From the first unmanned spacecraft to the planned mission to Mars in 2030, this awesome book celebrates the milestone achievements of space travel, the agonizingbut no less importantfailures, and the pioneers who made it happensometimes giving their lives to do it.