You&#x27;re right, both achievements are huge.<p>That said, I&#x27;m not too sure I understand the line &quot;the kinetic energy transfer at a 100 km reference altitude is what matters&quot;...<p>What is the &quot;kinetic energy transfer at 100km&quot; ? Why not say that what matters is the &quot;kinetic energy transfer&quot;, period? It doesn&#x27;t make any sense to me to put it the former way.