Impressed by Shuttle's last uncontrolled flight (8)
I believe the answer is:
stampede
'uncontrolled flight' is the definition.
(I've seen this before)
'impressed by shuttle's last' is the wordplay.
'impressed' becomes 'stamped' (stamping is a kind of impressing).
'by shuttle's last' becomes 'e' (I can't explain this - if you can you should believe this answer much more).
'stamped'+'e'='STAMPEDE'
Can you help me to learn more?
(Other definitions for stampede that I've seen before include "Sudden rush of people" , "rush for safety maybe" , "Run in panic" , "Wild headlong rush" , "Panic-driven rush of herd of animals" .)