>As far is 'how did it advance spaceflight'. its called progress. 20% is better than 0%. Maybe next time they will be 40%. "Progress" is doing something we hav

>As far is 'how did it advance spaceflight'. its called progress. 20% is better than 0%. Maybe next time they will be 40%. "Progress" is doing something we have collectively already been able to do, and then some, for decades?