People at Company Space X
Managed to retrieve a rocket
And on a floating barge to dock it.
It certainly makes good sense
To save a rocket's great expense,
And for its next mission to preserve,
Once successfully it has served.
And this rocket had been used apace
To launch cargo into space,
And send it to its destination:
The International Space Station.
If booster rockets could be saved,
To cheap space travel the way they'd save.
So, let us give three joyful cheers
To the Space X engineers!...