Solid-fuel rockets can't easily be shut down on command. Download Download Share on Facebook Share on Twitter Rotate quotes command easily fuel
Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap. Henry Spencer basisbuycheap share on social
In a small spacecraft, it was hard for the other two guys to sleep when the on-duty man was talking to Mission Control regularly. Henry Spencer controldutyguy Change image and share on social
Progress requires setbacks; the only sure way to avoid failure is not to try. Henry Spencer avoidfailureprogress Change image and share on social
I'm sensitive and get easily upset and insulted. Sia Furler easilyinsultsensitive Change image and share on social
The only thing I command is respect. Kyrie Irving commandrespectthing Change image and share on social
Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap. Henry Spencer basisbuycheap share on social
