As we saw in the last chapter, the easiest way to give a projectile enough energy to enter space is by using a ballistic missile. Although they are perhaps the most effective and certainly the quickest way to achieve spaceflight, ballistic missiles are also the most costly. Government-run space programs have always used ballistic missiles, because funding was seldom an issue. This was true especially during the early years of the Space Age. Furthermore, these programs have never been bothered by corporate competition, fiscal responsibility, or reputation.
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