SpaceX set to launch ‘used rocket’
Could anybody here comment on the differences between spacex&#x27;s engine, and the engines on the space shuttle?<p>I was under the impression that SpaceX was trying to make the first re-usable rocket stage, but I&#x27;ve recently found out that that isn&#x27;t true.  The space shuttle already holds that title.<p>I&#x27;m also kindof curious why they decided to go with a vertical-landing-design, instead of putting some wings on it and having it glide home like the shuttle did.  Is that a weight-concern?  Aerodynamics, mabye, but couldn&#x27;t the wings be articulated in the same way that the landing legs are right now?<p>(I will admit some ignorance in this field.  I&#x27;m definitely a fan, but I&#x27;m definitely not a historian or a rocket scientist)