Woahhh 😳... you made a switch TO helium that quickly between SN8 and SN9?!? Amazing that you can just make adjustments on the fly... no offense to traditional companies *cough Boeing* but that would've been a 2 year design change + 4 year delay from the drop (see SLS tank drop)

— Everyday Astronaut (@Erdayastronaut) December 30, 2020