&gt; despite not being a physicist&#x2F;rocket engineer<p>The article&#x27;s description of newtonian mechanics of orbits and energy is freshman physics stuff, and every engineer should know it.<p>Nevertheless, Musk is an astonishing man and I suspect he&#x27;ll go down in history as one of the greatest engineers. I wish I could buy a few shares of SpaceX and own a tiny morsel of the dream :-)